Porosity – GAT Scientific https://staging.gatscientific.com Preferred Tools for Material Characterization Wed, 17 Jun 2020 05:46:12 +0000 en-US hourly 1 https://wordpress.org/?v=6.7.2 Tristar II Plus https://staging.gatscientific.com/product/tristar-ii-plus/ Mon, 04 May 2020 06:35:14 +0000 /?post_type=product&p=759
Advanced Hardware and Software Features
  • The unique stainless steel analysis manifold is corrosive resistant and designed for highlyaccurate gas management
  • Improved Dewar design provides more than 40 hours of continuous temperature control
  • Intuitive MicroActive software gives the user the ability to interactively evaluate isotherm data and reduces the time required to obtain surface area and porosity results
  • User-defined reporting options allow direct modeling
  • Powerful Python scripting language allows users to develop extensions to the standard report library available within the TriStar II Plus software application
  • An innovative dashboard monitors and provides convenient access to real-time instrument performance indicators and maintenance scheduling information
  • Capable of utilizing two isotherms (CO2 and N2) for calculating pore size diameter via NLDFT for micropore analyses of carbons
Data Reduction Benefits
  • Interaction with adsorption data is direct. By simply moving the calculation bars, the user is immediately updated with new textual properties. One-click access to important parameters allows the user to focus on the result rather than the parameters
  • Interactive data manipulation minimizes the use of dialog boxes and tunneling of dialogs to specify calculation parameters. This allows the user to accurately and efficiently determine surface area and porosity of their materials
  • Improved ability to overlay files (up to 25) including mercury intrusion data with a file add and subtract feature
  • User selectable data ranges through the graphic interface allows direct modeling for BET, t-Plot, Langmuir, DFT interpretation, and much more
  • Report Options editor allows the user to define up to five reports with on-screen previews. Each report has the ability to possess multiple summary, tabular, and graphical information panes
Low Surface Area Measurement Option
  • A Krypton Option can extend surface area measurements to as low as 0.001 m2/g.

Enhanced Software Capabilities & Instrument Monitoring

MicroActive for TriStar II Plus Software

The intuitive MicroActive for TriStar II Plus software gives the user the ability to interactively evaluate isotherm data and reduce the time required to obtain surface area and porosity results. It is not necessary to generate reports to view results.

Calculations, such as the BET surface area transform plot, can be easily generated and adjusted. The selection bars allow for a range of data points to be quickly and easily selected. As a result, the summary of values derived from the calculations is instantly updated. Within the calculation window(s), the range of data used can be further refined.

Interactive Selection of the BET surface area calculation range

Gas Adsorption and Mercury Intrusion Overlay Capability

MicroActive for the TriStar II Plus software also includes a powerful utility that allows the user to overlay a mercury porosimetry pore size distribution with a pore size distribution calculated from gas adsorption isotherms. This new import function allows users to rapidly view micropore, mesopore, and macropore distributions in one easy-to-use application.

Overlay of BJH desorption and Mercury intrusion log differential pore size distributions for alumina pellets

Python Programming Language Included

The Python programming language has been incorporated into the TriStar II Plus software. This powerful scripting language allows users to develop extensions to the standard report library available within the TriStar II Plus application.

New isotherm model of calculations are easily added to the report system. The python interface to MicroActive allows users to customer their reports and extend the utility of MicroActive.

TriStar II Plus System Monitor

With a single click the TriStar II Plus provides a powerful suite of information that allows the user to maintain the instrument in peak operating condition with real-time analysis views.

  • Reporting Functions
  • Available tabular and Graphical Reports:
  • Single and multipoint BET surface area
  • Total pore volume
  • Langmuir surface area and Isotherm reports
  • t-Plot
  • Harkins and Jura Thickness Equation
  • Halsey Thickness Equation
  • Carbon STSA
  • Broekhoff-de Boer
  • Kruk-Jaroniec-Sayari
  • BJH adsorption and desorption
  • Standard
  • Kruk-Jaroniec-Sayari correction
  • Dollimore-Heal adsorption and desorption
  • Mesopore
  • Volume and area distributions by pore size
  • MP-Method
  • HK
  • Saito-Foley
  • Chang-Yang
  • DFT pore size
  • DFT surface energy
  • Summary Report
  • SPC reports
  • Validation reports
Extended Pore Range Analysis

The Dual DFT NLDFT model allows the user to combine the information gathered from nitrogen and carbon dioxide isotherms to deliver a full pore size distribution on materials (such as carbon slit pores) where pores of molecular sizes are present. The range of pore size analysis in this method is extended to smaller pore sizes compared to the standard nitrogen analysis. This is due to the fact that CO2 can access some very small micropores that are not accessible to N2 at cryogenic temperatures due to size restrictions, connectivity problems, or extremely slow diffusion.

This advanced NLDFT method allows users to determine the pore size distribution of their sample using two isotherms. In this example CO2 adsorption (red) at 273 K and nitrogen adsorption (green) at 77 K are used to calculate a single pore size distribution. Users do not have to cut and paste distributions from CO2 and nitrogen – a single distribution is determined using both isotherms.

External Sample Preparation Devices

Micromeritics’ sample preparation devices prepare batches of samples for surface area and pore volume analysis. They combine flowing gas and/or vacuum with heat to remove atmospheric contaminants, such as water vapor and adsorbed gas, from the surface and pores of the sample.

The FlowPrep™ 060 applies both heat and a stream of inert gas to the sample for removal of adsorbed contaminants from the surface and pores. With six degassing stations, this sample preparation unit lets you choose the temperature, gas, and flow rate.

The VacPrep™ 061 offers two methods for removing adsorbed contaminants. In addition to flowing gas, this sample preparation unit provides vacuum to prepare samples by heating and evacuation.

The SmartPrep™ 065 applies a stream of flowing gas over the sample at elevated temperatures to remove adsorbed contaminants. Temperature, ramp rates, and soak times of each sample are individually controlled on the six degas- sing stations by a computer.

The Smart VacPrep™ 067 is an advanced six-port system that utilizes vacuum to prepare samples by heating and evacuation. Each of the ports may be operated independently. Samples may be added or removed from degas ports without disturbing the treatment of other samples undergoing preparation. Degassing automatically terminates when the samples have completed all programmed steps.

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Tristar II Series https://staging.gatscientific.com/product/tristar-ii-series/ Mon, 04 May 2020 05:39:37 +0000 /?post_type=product&p=748
A Small Footprint Packed with Features
  • Three analysis ports can operate simultaneously and independently of one another. Three BET surface area measurements can be performed in less than 20 minutes.
  • The TriStar II accommodates the use of nitrogen, argon, carbon dioxide, and other non-corrosive gases such as butane, methane, or other light hydrocarbons.
  • A dedicated Po port is standard, allowing the measurement of saturation pressure on a continuous basis. Saturation pressure can be entered manually, measured continuously, or collected over the sample.
  • Incremental or fixed dosing routines prevent overshooting pressure points while minimizing analysis time.
  • Free space can be measured, calculated, or manually entered providing maximum flexibility in accommodating special sample types and emphasizing speed when needed. Helium is not required.
  • The TriStar II can collect up to 1000 data points. Fine details of the isotherm can be observed and recorded providing high resolution and revealing pore structure details.
  • Optional sample preparation devices are available combining flowing gas and/or vacuum with heat to remove atmospheric contaminants, such as water vapor and adsorbed gas, from the surface and pores of the sample
Low Surface Area Measurement Option
  • A Krypton Option can extend surface area measurements to as low as 0.001 m2/g.

Features

Operating Software

The TriStar II Windows interface provides a familiar environment for the user. It is easy to collect, organize, archive, reduce isotherm data, and store standardized sample information for later use. The reports may be generated to screen, paper, or spreadsheet file. Cut-and-paste graphics, scalableand editable graphs, and customized reports are easily generated.

In addition to controlling instrument operation, the Windows software also reduces the isotherm data collected during analysis. The reduced data can be reviewed or printed in a variety of easy-to- interpret tabular and graphical reports.

Tabular and Graphic Reports:
  • Single and multipoint BET surface area
  • Total pore volume
  • Langmuir surface area and Isotherm reports
  • t-plot
  • Harkins and Jura Thickness Equation
  • Halsey Thickness Equation
  • Carbon STSA
  • Broekhoff-de Boer
  • Kruk-Jaroniec-Sayari
  • BJH adsorption and desorption
  • Standard
  • Kruk-Jaroniec-Sayari correction
  • Dollimore-Heal adsorption and desorption
  • Mesopore
  • Volume and area distributions by pore size
  • MP-Method
  • HK
  • Saito-Foley
  • Chang-Yang
  • DFT pore size
  • DFT surface energy
  • Summary Report
  • SPC reports
  • Validation reports
  • External Sample Preparation Devices

Micromeritics’ sample preparation devices prepare batches of samples for surface area and pore volume analysis. They combine flowing gas and/or vacuum with heat to remove atmospheric contaminants, such as water vapor and adsorbed gas, from the surface and pores of the sample.

The FlowPrep™ 060 applies both heat and a stream of inert gas to the sample for removal of adsorbed contaminants from the surface and pores. With six degassing stations, this sample preparation unit lets you choose the temperature, gas, and flow rate.

The VacPrep™ 061 offers two methods for removing adsorbed contaminants. In addition to flowing gas, this sample preparation unit provides vacuum to prepare samples by heating and evacuation.

The SmartPrep™ 065 applies a stream of flowing gas over the sample at elevated temperatures to remove adsorbed contaminants. Temperature, ramp rates, and soak times of each sample are individually controlled on the six degas- sing stations by a computer.

The Smart VacPrep™ 067 is an advanced six-port system that utilizes vacuum to prepare samples by heating and evacuation. Each of the ports may be operated independently. Samples may be added or removed from degas ports without disturbing the treatment of other samples undergoing preparation. Degassing automatically terminates when the samples have completed all programmed steps.

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Gemini VII 2390 https://staging.gatscientific.com/product/gemini-vii-2390/ Mon, 04 May 2020 05:13:07 +0000 /?post_type=product&p=742
  • The Windows version includes easy-to-follow installation videos and system verification tests to ensure optimum performance and reliability. How-to videos provide on-screen instruction on instrument operation.
  • The patented twin-tube design negates free-space errors introduced by thermal gradient variations or by initial mis-measurement of free space
  • Permits low surface area measurements without requiring krypton by essentially eliminating free-space error, the limiting factor in typical static volumetric systems.
  • Accelerates delivery of the analysis gas because sample uptake controls the rate at which the gas is delivered to the sample. This results in a surface area analyzer that is as fast as the physics of adsorption allows
  • The use of a servo valve to control the rate of gas flow into the sample tube assures accurate attainment of target pressures without pressure overshoot
  • Three choices of software control: embedded software with a keypad enabling the Gemini VII to be operated without an external PC, Windows XP or Vista operating system, or the Gemini VII confirm™ 21 CFR Part 11 option.

Advantages

  • Low Cost
  • System verification tests
  • Fully automatic operation
  • High throughput – up to four Geminis can be operated with single computer
  • Capable of measuring low surface area materials
  • Keypad- or computer-operated with Windows-driven software
  • Choice of analysis mode (scan or equilibrate)
  • No pressure overshoot
  • Common mode rejection of free-space error effects
  • No thermal-diffusion errors
  • Optional stainless-steel Dewars
  • 21 CFR Part 11 software option
  • IQ/OQ Validation service (optional)

Three Model Options:

Gemini VII 2390a

Ideal for rapid and accurate surface area determinations by single-point and multipoint BET and Langmuir methods. In addition, provides standard methods for total pore volume, micropore analysis by the t-method, and much more. Included is the capability to determine statistical thickness surface area (STSA) of carbon blacks. (Refer to ASTM D 6556, ASTM D 3765, ISO/DIS 18852.2, or ISO/CD 4652-2/3.)

Gemini VII 2390p

Provides additional precision with the addition of a saturation pressure (P0) tube that allows the system to monitor the saturation pressure of the adsorptive on a continuous basis during an analysis. This design feature permits a rapid measurement of the adsorption isotherm to near-saturation, as well as determination of pore size distribution.

Gemini VII 2390t

Has all the ability of the 2390p, including a P0 tube, with the addition of a larger Dewar and longer sample tubes for extended analyses. This provides the additional capability to measure the total adsorption-desorption process. With this data set, one can perform a BJH or Dollimore-Heal pore size distribution using up to 1000 data points.

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ASAP2050 https://staging.gatscientific.com/product/asap2050/ Mon, 04 May 2020 04:20:27 +0000 /?post_type=product&p=723

Knowledge of chemical reactivity and material properties, particularly with respect to exposure under different conditions (air, moisture, etc.) needs to be gathered.

Micromeritics’ ASAP 2050 Xtended Pressure Sorption Analyzer is designed to address these and many other elevated-pressure sorption needs. The instrument combines many of the capabilities of Micromeritics’ popular ASAP 2020 with additional features that allow the user to obtain data in an extended-pressure environment.

Standard ASAP Features
  • Two independent vacuum systems allowing simultaneous automated preparation of two samples and analysis of another
  • Two-station intelligent degas system for fully automated degassing with precisely controlled heating profiles
  • A highly flexible and interactive reporting system that includes an extremely versatile graphic user interface allowing custom presentation of results
Additional ASAP 2050 Features
  • Analysis System
  • Analysis manifold is capable of operating from vacuum to 10 atmospheres
  • An optional chiller Dewar and recirculating bath allow the ASAP 2050 to be operated indefinitely – the instrument also supports the use of a standard Dewar with cryogen (typically liquid nitrogen or argon) that will provide at least 50 hours of unattended analysis without refilling the Dewar
  • Straight-walled, stainless-steel sample tubes are capable of safe operation up to 150 psia
  • Rapid collection of non-monotonic isotherms with standard isotherm cycling software
  • Special degas heating mantles can be used to prepare samples in situ on the analysis port prior to analysis
  • Degas System
  • Temperatures at each degas port, and the rate of temperature change, can be set and monitored individually from a few degrees above ambient to 450 oC
  • A user specified pressure setting protects the sample from steaming or damage during sample preparation.

ASAP 2050 Hardware Advantages

The ASAP 2050 uses two independent vacuum systems, one for sample analysis and one for sample preparation. This allows preparation and analysis to proceed concurrently without the inherent delay found in single vacuum system analyzers that must share a pump. Moreover, independent systems completely eliminate the possibility of cross-contamination between the degas and analysis manifolds.

A two-station intelligent degas system provides fully automated degassing with controlled heating time profiles. Temperatures at each degas port, and the rate of temperature change, can be set and monitored individually. The temperature can be controlled from a few degrees above ambient to 450 ºC. A sample may be added to or removed from a degas port without disturbing the treatment of the other sample. The degas treatment information is saved as part of the sample file, included in analysis reports, and can be conveniently copied and reused for other samples to ensure repeatability and reproducibility.

Stainless-steel, temperature-monitored analysis manifolds are designed for optimal internal volumes and superior vacuum performance. These optimized manifolds, in combination with temperature monitoring, ensure highly accurate measurements of sorbed gas volumes. Analysis manifolds are capable of operating from vacuum to 10 atmospheres. This allows a rapid collection of isotherms.

An optional chiller Dewar and recirculating bath allow the ASAP 2050 to be operated indefinitely. The instrument also supports the use of a standard Dewar with cryogen that will provide at least 50 hours of unattended analysis without refilling the Dewar. Micromeritics’ patented Isothermal Jackets can be used to assure a constant thermal profile along the full length of both the sample and saturation pressure (P0) tubes throughout extended analyses.

ASAP 2050 Stainless-Steel Sample tube

Straight-walled, stainless-steel sample tubes enable extended pressure analyses and are capable of safe operation up to 150 psia (10 atmospheres).

The ASAP 2050 features a single high-quality, stable, low-noise transducer system for all measurements. This eliminates the possibility of progressive offset and drift between separate transducers covering the same range.

Special degas heating mantles can be used to prepare samples in situ on the analysis port prior to analysis. The new heating mantle is designed to allow the user to place the mantle on the sample tube without removing the Dewar.

ASAP Reference Materials

Lanthanum Penta-Nickel (LaNi5)

is a well-known alloy that readily forms hydrides. This reference material is recommended for use with the ASAP 2050 to demonstrate the formation and characterization of hydrides. This material is ideally suited for use with the pressure composition isotherm report.

Silica-Alumina

is a typical porous, high surface area reference material. The surface area of the silica-alumina typically exceeds 200 m2/g and the pore size is a nominal 100 Å. This material is recommended for users who analyze amorphous materials with surface area ranging from 10 to greater than 300 m2/g for both non-porous and porous materials in the 40 – 3000 Å range. Silica-alumina is suitable for use with BET, t-plot, and BJH pore size reports.

Carbon Black

Standard Reference Blacks are available from 20 to greater than 100 m2/g and are stable, well-characterized materials. They are recommended for all users but may be especially suited for researchers in the carbon, tire, and filler industries. Carbon black reference materials are suitable for use with BET and STSA reports.

Glass

A 5 m2/g glass reference material is recommended for industries and users who characterize materials in the 1 through 50 m2/g range. Glass reference material is suitable for use with BET surface area reports.

ASAP 2050 XP Software Features and Reports

The easy-to-use ASAP 2050 software utilizes a Windows interface that includes Wizards and applications to help plan, launch, and control the analysis. You can collect, organize, archive and reduce raw data, and store standardized sample information and analysis conditions for easy access during later applications. Finished reports may be generated to screen, paper, or data transfer channels. Features include cut-and-paste graphics, scalable-and-editable graphs, and customizable reports.

Additional capabilities include:
  • Degas temperature profiles and treatment time data are integrated with the sample file for future reference and verification of SOP compliance.
  • The Instrument Schematic screen displays the instrument’s current operating status, including the real-time isotherm, and allows the operator to assume manual control of the instrument if desired.
  • One computer can control two Micromeritics ASAP analyzers of the same or different model making efficient use of valuable lab space. Other types of Micromeritics instruments can also be connected.
  • Up to nine graphs can be overlaid for easy comparison of different samples or for comparison of different data reduction techniques applied to the same sample.
  • Exportable data tables provide for merging and comparing data from other sources in a unified single spreadsheet file.
  • Three modes of gas dosing routines provide effective choices to ensure maximum speed with full accuracy for samples with widely differing isotherm shapes.
  • The patented Smart Dosing™ routine actually learns about the sample’s potential to adsorb gas and adjusts the adsorptive doses accordingly. This helps prevent over-dosing the sample and obscuring porosity information.
Analyses and Reports

The ASAP 2050 includes powerful data reduction software to provide a variety of easy-to-interpret report options. This allows tremendous flexibility in the selection of analysis constants to best fit your specific application. All ASAP models have the capability to collect data over a prescribed segment of the pressure range, or to perform adsorption and desorption analyses over the entire pressure range, providing extensive surface area and porosity information. The ASAP 2050 is a versatile adsorption instrument. In addition to collecting adsorption isotherms up to 150 psia, traditional isotherms may be collected with nitrogen; BET surface area and BJH pore size distributions are easily determined.

The ASAP 2050 model includes:

  • Repetitive Isotherm Cycling
  • DFT (Density Functional Theory)
  • Single- and Multipoint BET (Brunauer, Emmett, and Teller) surface area
  • Langmuir surface area
  • Temkin and Freundlich isotherm analyses
  • Pore volume and pore area distributions in the mesopore and macropore ranges by the BJH (Barrett, Joyner, and Halenda) method using a variety of thickness equations including user-defined, standard isotherm
  • Pore volume and total pore volume in a user-defined pore size range
  • F-Ratio plots that illustrate the difference between theoretical and experimental isotherm data
  • Heat of Adsorption

The ASAP 2050 is a versatile adsorption instrument. In addition to collecting adsorption isotherms up to 150 psia (top), traditional isotherms may be collected with nitrogen (middle); BET surface area and BJH pore size distributions are easily determined (bottom).

Hydrogen isotherms at several temperatures are rapidly measured using the ASAP 2050.

The Pressure Composition Isotherm of lanthanum nickel demonstrates the ability to characterize hydride formation using the ASAP 2050.

High-resolution nitrogen and oxygen isotherms for pressure-swing adsorption applications are easily obtained using the ASAP 2050.

ASAP2050 XP Technique Overview

The basics of the analytical technique are simple; a sample contained in an evacuated sample tube is cooled (typically) to cryogenic temperature, then is exposed to analysis gas at a series of precisely con-trolled pressures. With each incremental pressure increase, the number of gas molecules adsorbed on the surface increases. The pressure at which adsorption equilibrium occurs is measured and the universal gas law is applied to determine the quantity of gas adsorbed.

As adsorption proceeds, the thickness of the adsorbed film increases.Any micropores in the surface are quickly filled, then the free surface becomes completely covered, and finally larger pores are filled.The process may continue to the point of bulk condensation of the analysis gas. Then, the desorption process may begin in which pressure systematically is reduced resulting in liberation of the adsorbed molecules. As with the adsorption process, the changing quantity of gas on the solid surface is quantified. These two sets of data describe the adsorption and desorption isotherms. Analysis of the isotherms yields information about the surface characteristics of the material.

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ASAP2460 https://staging.gatscientific.com/product/asap2460/ Mon, 04 May 2020 03:49:05 +0000 /?post_type=product&p=718
Analytical Versatility with Superior Throughput

All analysis ports can be operated independently and concurrently, allowing the user to load and unload samples at any time, regardless of the analysis stage.

An analysis in excess of 60 hours can be performed without refilling the dewar.

With a master unit and two auxiliary units, BET surface area analyses utilizing six parallel runs can be achieved in as little as 30 minutes.

Servo control for dosing and evacuation provides a higher degree of gas management and speeds collection of data points through reduction of dosing overshoot.

Up to five different non-reactive adsorptives, plus helium for free space, can be attached to the analyzer simultaneously.

Long-duration dewars and isothermal jackets assure a stable thermal profile along the length of both the sample and saturation pressure (P0) tubes throughout lengthy analyses.

Intuitive MicroActive software combines user defined reports with the ability to interactively evaluate isotherm data.

User selectable data ranges through the graphic interface allow direct modeling for BET, t-plot, Langmuir, DFT interpretation, and new advanced NLDFT methods.

Link to ASAP 2460 Data Presentation

An innovative dashboard monitors and provides convenient access to real-time instrument performance indicators and maintenance scheduling.

Benefits

  • Fully automated modular system optimized for walk-up sample screening
  • High throughput with two, four, or six independent analysis stations
  • BET surface area measurements in as little as 30 minutes
  • Dosing options of maximum volume increment or dosing over specified pressure ranges
  • Analysis temperature can be entered, calculated, or measured
  • Equilibration option allows user to specify equilibration times for different parts of the isotherm
  • Low surface area and micropore options
  • Innovative MicroActive software with advanced NLDFT modeling
Low Surface Area Measurement (Krypton) and Dedicated Micropore Options

In addition to the standard 2460, low surface area krypton and micropore models are available. Low surface area (Krypton) model includes the addition of a 10-mm Hg transducer and permits accurate measurement of very low surface area on materials such as API (active pharmaceutical ingredient), powdered metals, etc.

The micropore model includes the addition of a 1-mm Hg transducer which extends the low pressure measurement capabilities and allows enhanced performance for characterizing microporous materials using nitrogen, argon, carbon dioxide, hydrogen, and other fixed gases. The transducer also increases pressure resolution in the range necessary for micropore analysis.

Typical Applications

Pharmaceuticals:
  • Surface area and porosity play major roles in the purification, processing, blending, tableting, and packaging of pharmaceutical products.
Ceramics:
  • Surface area and porosity affect the curing and bonding of greenware and influence strength, texture, appearance, and density of finished goods.
Adsorbents:
  • Knowledge of surface area, total pore volume, and pore size distribution is important for quality control of industrial adsorbents and in the development of separation processes.
Activated Carbons:
  • Surface area and porosity must be optimized within narrow ranges to accomplish gasoline vapor recovery in automobiles, solvent recovery in painting operations, or pollution controls in wastewater management.
Carbon Black:
  • The wear lifetime, traction, and performance of tires are related to the surface area of carbon blacks used in their production.
Fuel Cells:
  • Fuel cell electrodes require high surface area with controlled porosity to produce optimum power density.
Catalysts:
  • The active surface area and pore structure of catalysts influence production rates. Limiting the pore size allows only molecules of desired sizes to enter and exit.
Paints and Coatings:
  • The surface area of a pigment or filler influences the gloss, texture, color, color saturation, brightness,solids content, and film adhesion properties.
Projectile Propellant:
  • The burn rate of propellants is a function of surface area too high a rate can be dangerous; too low a rate can cause malfunction and inaccuracy.
Medical Implants:
  • Controlling the porosity of artificial bone allows it to imitate real bone that the body will accept and allow tissue to be grown around it.
Electronics:
  • By selecting high surface area material with carefully designed pore networks, manufacturers of super-capacitors can minimize the use of costly raw materials while providing more exposed surface area for storage of charge.
Cosmetics:
  • Surface area is often used by cosmetic manufacturers as a predictor of particle size when agglomeration tendencies of the fine powders make analysis with a particle-sizing instrument difficult.
Aerospace:
  • Surface area and porosity of heat shields and insulating materials affect weight and function.
Geoscience:
  • Porosity is important in groundwater hydrology and petroleum exploration because it relates to the quantity of fluid that a structure can contain.
Nanotubes:
  • Nanotube surface area and microporosity are used to predict the capacity of a material to store hydrogen.

Instrument Overview

Innovative MicroActive Software:
  • Micromeritics’ innovative MicroActive software allows users to interactively evaluate isotherm data from Micromeritics ASAP, TriStar, and Gemini gas adsorption instruments.
  • Users can easily include or exclude data, fitting the desired range of experimentally acquired data points using interactive, movable calculation bars. Isotherms can be viewed on either a linear or logarithmic scale, available to the user under each calculation model. No need to generate reports to review results.

Data Reduction Benefits:

  • Interaction with adsorption data is direct. By simply moving the calculation bars, the user is immediately updated with new textual properties.
  • Interactive data manipulation minimizes the use of dialog boxes and tunneling of dialogs to specify calculation parameters.
  • Improved ability to overlay files (up to 25) including mercury intrusion data with single-click file add and subtract feature.
  • User selectable data ranges through the graphic interface allow direct modeling for BET, t-plot, Langmuir, DFT interpretation, and much more.
  • Report Options editor allows the user to define up to five reports with on-screen previews. Each report has the ability to possess one summary, tabular, and graphical information pane.

Calculations, such as the BET surface area transform plot, can be easily generated and adjusted. The selection bars allow for a range of data points to be quickly and easily selected.

As a result, the summary of values derived from the calculations is instantly updated. Within the calculation window(s), the range of data used can be further refined.

The pressure table allows data points to be taken in small increments of pressure, quantity dosed, or both.

Method wizards:
  • Both novice and experienced users can easily create methods. Methods corresponding to published ASTM test methods are included for various materials.

NLDFT Modeling

The NLDFT Advanced PSD, Dual DFT modeling allows the user to combine the information gathered from nitrogen and carbon dioxide isotherms to deliver a full pore size distribution on materials (such as carbon slit pores) where pores of molecular sizes are present.

The range of pore size analysis in this method is extended to smaller pore sizes compared to the standard nitrogen analysis. This is due to the fact that CO2 can access some very small micropores that are not accessible to N2 at cryogenic temperatures because of size restrictions.

ASAP 2460 Interactive Reports include

  • Isotherm
  • BET Surface Area
  • Langmuir Surface Area
  • t-Plot
  • Alpha-S Method
  • BJH Adsorption and Desorption
  • Dollimore-Heal Adsorption and Desorption
  • Horvath-Kawazoe
  • MP-Method
  • DFT Pore Size and Surface Energy
  • Dubinin-Radushkevich
  • Dubinin-Astakhov
  • Summary
  • User-Defined Reports
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ASAP2420 https://staging.gatscientific.com/product/asap2420/ Mon, 04 May 2020 03:29:38 +0000 /?post_type=product&p=709

Features

High Performance – High Throughput – The ASAP 2420 system is designed to help today’s busy laboratories expand their work flow while providing highly-accurate and precise surface area and porosimetry data. High-performance and versatile analysis and sample preparation systems are included in the same instrument.

Operational Advantages

  • Fully automated analyses
  • High throughput with six independent analysis stations
  • Each analysis port has a dedicated analysis and P0 pressure transducer
  • Twelve independently controlled degas ports
  • Evacuation rate precisely regulated by a servo valve
  • BET surface area measurements in as little as 30 minutes
  • Dosing options of maximum volume increment or dosing over specified pressure ranges
  • Analysis temperature can be entered, calculated, or measured
  • Equilibration option allows user to specify equilibration times for different parts of the isotherm
  • Low surface area option with five independent analysis ports
  • Windows-driven software
  • Multi-Port, High Throughput
  • Analysis System

With six independently operated analysis ports, a new analysis can begin as soon as another is finished. This provides an important advantage over many multiport instruments that require all samples to be prepared or analyzed at the same time.

Extended analyses can be performed without refilling the Dewar. This allows unattended analysis of high resolution adsorption/desorption isotherms.

BET surface area analyses utilizing six parallel runs can be achieved in as little as 30 minutes.

The system allows dosing options of maximum volume increment or dosing over specified pressure ranges.

The analysis temperature can be entered, calculated, or measured.

Long-duration Dewars and patented Isothermal Jackets assure a constant thermal profile along the length of both the sample and saturation pressure (P0) tubes during the analyses. The P0 value may be entered, or measured either continuously or at selected intervals.

The equilibration interval is user specified and enhanced to allow the user to define equilibration intervals for different parts of the isotherm.

A low surface area option that uses krypton as an adsorptive to measure total surface areas of 5 m2 or less is available. This option features a turbo-molecular drag pump, which provides the high vacuum required for krypton analyses, and a 10-mmHg pressure transducer, which allows accurate, repeatable pressure resolution. This option utilizes five of the six available sample ports.

In addition to controlling the instrument’s operation, powerful Windows software also reduces the raw data collected during the analysis. The reduced data can be reviewed or printed in a variety of easy-to-interpret tabular and graphical reports.

Optional Confirm 21 CFR Part 11 software assists with compliance to FDA regulations. IQ and OQ services help assure that the system is validated for proper installation, accuracy, and consistent performance.

Sample Preparation System

The ASAP 2420 system includes twelve automatically controlled sample preparation ports that operate independently. Samples may be added or removed from degas ports without disturbing the treatment of other samples undergoing preparation or analysis.

The sample preparation system is fully automated with controlled heating time profiles. The temperature and ramp rate can be set and monitored individually and controlled from a few degrees above ambient to 450 oC. The temperature hold period may extend past the point when evacuation is completed.

A programmable pressure threshold can suspend the temperature ramp if the out-gassing pressure exceeds the limit specified, preventing destructive steaming or other undesired reactions with residual gases and vapors.

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ASAP2020A https://staging.gatscientific.com/product/asap2020a/ Mon, 04 May 2020 03:21:44 +0000 /?post_type=product&p=706
Major advantages that the ASAP 2020A expansion unit brings to ASAP 2020 users:
  •  Adds micropore capability to your system (whether the base ASAP 2020 was capable of measuring in the micropore range or not, the ASAP 2020A will give you this capability)
  • The expansion unit operates with 64 bit PCs and extends this capability to the base ASAP 2020 system
  • The ASAP 2020A utilizes the well-known Microactive data analysis software and extends that capability to the base ASAP 2020 system
  • The single port, single station ASAP 2020A effectively doubles the throughput
  • Users are able to utilize the existing degassing system on the ASAP 2020 to prepare samples for the 2020A

Typical ASAP 2020 Plus Applications

Pharmaceuticals:
  • Surface area and porosity play major roles in the purification, processing, blending, tableting, and packaging of pharmaceutical products as well as their useful shelf life, dissolution rate, and bio-availability.
Ceramics:
  • Surface area and porosity affect the curing and bonding of greenware and influence strength, texture, appearance, and density of finished goods. The surface area of glazes and glass frits affects shrinkage, crazing, and crawling.
Adsorbents:
  • Knowledge of surface area, total pore volume, and pore size distribution is important for quality control of industrial adsorbents and in the development of separation processes. Surface area and porosity characteristics affect the selectivity of an adsorbent.
Activated Carbons:
  • Surface area and porosity must be optimized within narrow ranges to accomplish gasoline vapor recovery in automobiles, solvent recovery in painting operations, or pollution controls in wastewater management.
Carbon Black:
  • The wear lifetime, traction, and performance of tires are related to the surface area of carbon blacks used in their production.
Fuel Cells:
  • Fuel cell electrodes require high surface area with controlled porosity to produce optimum power density.
Catalysts:
  • The active surface area and pore structure of catalysts influence production rates. Limiting the pore size allows only molecules of desired sizes to enter and exit, creating a selective catalyst that will produce primarily the desired product.
Paints and Coatings:
  • The surface area of a pigment or filler influences the gloss, texture, color, color saturation, brightness,solids content, and film adhesion properties. The porosity of a print media coating is important in offset printing where it affects blistering, ink receptivity, and ink holdout.
Projectile Propellant:
  • The burn rate of propellants is a function of surface area too high a rate can be dangerous; too low a rate can cause malfunction and inaccuracy.
Medical Implants:
  • Controlling the porosity of artificial bone allows it to imitate real bone that the body will accept and allow tissue to be grown around it.
Electronics:
  • By selecting high surface area material with carefully designed pore networks, manufacturers of super-capacitors can minimize the use of costly raw materials while providing more exposed surface area for storage of charge.
Cosmetics:
  • Surface area is often used by cosmetic manufacturers as a predictor of particle size when agglomeration tendencies of the fine powders make analysis with a particle-sizing instrument difficult.
Aerospace:
  • Surface area and porosity of heat shields and insulating materials affect weight and function.
Geoscience:
  • Porosity is important in groundwater hydrology and petroleum exploration because it relates to the quantity of fluid that a structure can contain as well as how much effort will be required to extract it.
Nanotubes:
  • Nanotube surface area and microporosity are used to predict the capacity of a material to store hydrogen.
More Applications:
  • Adhesives
  • Alloys
  • Abrasives
  • Carbonates
  • Cements
  • Clays
  • Detergents
  • Fibers
  • Films
  • Fertilizers
  • Filters
  • Glass
  • Food Additives
  • Graphite
  • Minerals
  • Paper
  • Polishing Compounds
  • Polymers
  • Resins
  • Soils and Sediments

MicroActive for ASAP2020 Plus

Interactive Data Reduction Software:
  • Micromeritics’ innovative MicroActiv software allows you to interactively evaluate isotherm data. You can easily include or exclude data, fitting the desired range of experimentally acquired data points using interactive, movable calculation bars. The isotherm can be viewed real-time on either a linear or logarithmic scale, available to you under each calculation model.
MicroActive reports for ASAP 2020 Plus Physisorption:
  • Isotherm
  • BET Surface Area
  • Langmuir Surface Area
  • t-Plot
  • Alpha-S Method
  • BJH Adsorption and Desorption
  • Dollimore-Heal Adsorption and Desorption
  • Temkin and Freundlich
  • Horvath-Kawazoe
  • MP-Method
  • DFT Pore Size and Surface Energy
  • Dubinin-Radushkevich
  • Dubinin-Astakhov
  • User Defined Reports

Calculations can be easily generated and adjusted. The selection bars allow for a range of data points to be quickly and easily selected.

Calculations can be easily generated and adjusted. The selection bars allow for a range of data points to be quickly and easily selected.

MicroActive for ASAP 2020 Plus Chemisorption:

MicroActive provides you with direct access and manipulation of chemical adsorption isotherm data. Unified Analysis Conditions for physical and chemical analyses allows you to rapidly develop new methods with a common interface.

Reported Data Include:
  • Active Metal Surface Area
  • Average Crystallite Size
  • Irreversible and Reversible Sorption
  • Monolayer Capacity
  • Active Metal Dispersion
Data Reduction Features:
  • Interaction with adsorption data is direct. By simply moving the calculation bars, the user is immediately updated with new textual properties.
  • One-click access to important parameters.
  • Interactive data manipulation minimizes the use of dialog boxes and tunneling of dialogs to specify calculation parameters.
  • Improved ability to overlay files (up to 25) including mercury intrusion data with a file add-and-subtract feature and data from competitive instruments.
  • User-selectable data ranges through the graphic interface allow direct modeling for BET, t-Plot, Langmuir, DFT interpretation, and much more. The MicroActive suite provides an extensive selection of NLDFT models for calculating pore size distributions.
  • Report Options editor allows the user to define reports with on-screen previews. Each report has the ability to possess one summary, tabular, and graphical information pane.
  • Powerful Python programming language allows you to develop extensions to the standard report available within the ASAP 2020 Plus MicroActive application.
Partnership and Support Network:
  • Expertise in application assistance is only a phone call away. Every Micromeritics instrument is backed by a dedicated, knowledgeable staff of experts.
  • Responsive worldwide service and technical support provides the needed security and peace of mind for you, our customers, ensuring that your sample and product development pathways continue to progress.
  • Referenced in an extensive number of peer-reviewed articles in prestigious journals, your ASAP 2020 will link you to a large and growing community of users.
Optional Cryostat:
  • A single-stage cryogenic refrigerator that operates on the Gifford-McMahon refrigeration cycle. It uses helium gas from a helium compressor(s) to offer a wide range of analytical temperatures with milli Kelvin levels of stability.
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ASAP2020 Plus Chemisorption https://staging.gatscientific.com/product/asap2020-plus-chemisorption/ Mon, 04 May 2020 03:09:33 +0000 /?post_type=product&p=704
  • Programmable, two-station degas system allows physisorption sample preparation while running a chemisorption analysis
  • Twelve gas inlets allow multiple probe gases to be investigated maximizing efficiency and range of applications
  • Dedicated exhaust port for external detector connections
  • High-temperature 1100 °C furnace rapidly ramps to temperature and provides excellent, stable temperature and control with quick cool downs In situ chemisorption sample reparation and activation provide a fully automated method that does not require user intervention
  • In situ chemisorption sample preparation and activation provide a fully automated method that does not require user intervention
  • Design permits quick and easy transition from chemisorption to physisorption analysis

Typical ASAP 2020 Plus Applications

Pharmaceuticals:
  • Surface area and porosity play major roles in the purification, processing, blending, tableting, and packaging of pharmaceutical products as well as their useful shelf life, dissolution rate, and bio-availability.
Ceramics:
  • Surface area and porosity affect the curing and bonding of greenware and influence strength, texture, appearance, and density of finished goods. The surface area of glazes and glass frits affects shrinkage, crazing, and crawling.
Adsorbents:
  • Knowledge of surface area, total pore volume, and pore size distribution is important for quality control of industrial adsorbents and in the development of separation processes. Surface area and porosity characteristics affect the selectivity of an adsorbent.
Activated Carbons:
  • Surface area and porosity must be optimized within narrow ranges to accomplish gasoline vapor recovery in automobiles, solvent recovery in painting operations, or pollution controls in wastewater management.
Carbon Black:
  • The wear lifetime, traction, and performance of tires are related to the surface area of carbon blacks used in their production.
Fuel Cells:
  • Fuel cell electrodes require high surface area with controlled porosity to produce optimum power density.
Catalysts:
  • The active surface area and pore structure of catalysts influence production rates. Limiting the pore size allows only molecules of desired sizes to enter and exit, creating a selective catalyst that will produce primarily the desired product.
Paints and Coatings:
  • The surface area of a pigment or filler influences the gloss, texture, color, color saturation, brightness,solids content, and film adhesion properties. The porosity of a print media coating is important in offset printing where it affects blistering, ink receptivity, and ink holdout.
Projectile Propellant:
  • The burn rate of propellants is a function of surface area too high a rate can be dangerous; too low a rate can cause malfunction and inaccuracy.
Medical Implants:
  • Controlling the porosity of artificial bone allows it to imitate real bone that the body will accept and allow tissue to be grown around it.
Electronics:
  • By selecting high surface area material with carefully designed pore networks, manufacturers of super-capacitors can minimize the use of costly raw materials while providing more exposed surface area for storage of charge.
Cosmetics:
  • Surface area is often used by cosmetic manufacturers as a predictor of particle size when agglomeration tendencies of the fine powders make analysis with a particle-sizing instrument difficult.
Aerospace:
  • Surface area and porosity of heat shields and insulating materials affect weight and function.
Geoscience:
  • Porosity is important in groundwater hydrology and petroleum exploration because it relates to the quantity of fluid that a structure can contain as well as how much effort will be required to extract it.
Nanotubes:
  • Nanotube surface area and microporosity are used to predict the capacity of a material to store hydrogen.
More Applications:
  • Adhesives
  • Alloys
  • Abrasives
  • Carbonates
  • Cements
  • Clays
  • Detergents
  • Fibers
  • Films
  • Fertilizers
  • Filters
  • Glass
  • Food Additives
  • Graphite
  • Minerals
  • Paper
  • Polishing Compounds
  • Polymers
  • Resins
  • Soils and Sediments

MicroActive for ASAP2020 Plus

Interactive Data Reduction Software:
  • Micromeritics’ innovative MicroActiv software allows you to interactively evaluate isotherm data. You can easily include or exclude data, fitting the desired range of experimentally acquired data points using interactive, movable calculation bars. The isotherm can be viewed real-time on either a linear or logarithmic scale, available to you under each calculation model.
MicroActive reports for ASAP 2020 Plus Physisorption:
  • Isotherm
  • BET Surface Area
  • Langmuir Surface Area
  • t-Plot
  • Alpha-S Method
  • BJH Adsorption and Desorption
  • Dollimore-Heal Adsorption and Desorption
  • Temkin and Freundlich
  • Horvath-Kawazoe
  • MP-Method
  • DFT Pore Size and Surface Energy
  • Dubinin-Radushkevich
  • Dubinin-Astakhov
  • User Defined Reports

Calculations can be easily generated and adjusted. The selection bars allow for a range of data points to be quickly and easily selected.

Calculations can be easily generated and adjusted. The selection bars allow for a range of data points to be quickly and easily selected.

MicroActive for ASAP 2020 Plus Chemisorption:

MicroActive provides you with direct access and manipulation of chemical adsorption isotherm data. Unified Analysis Conditions for physical and chemical analyses allows you to rapidly develop new methods with a common interface.

Reported Data Include:
  • Active Metal Surface Area
  • Average Crystallite Size
  • Irreversible and Reversible Sorption
  • Monolayer Capacity
  • Active Metal Dispersion
Data Reduction Features:
  • Interaction with adsorption data is direct. By simply moving the calculation bars, the user is immediately updated with new textual properties.
  • One-click access to important parameters.
  • Interactive data manipulation minimizes the use of dialog boxes and tunneling of dialogs to specify calculation parameters.
  • Improved ability to overlay files (up to 25) including mercury intrusion data with a file add-and-subtract feature and data from competitive instruments.
  • User-selectable data ranges through the graphic interface allow direct modeling for BET, t-Plot, Langmuir, DFT interpretation, and much more. The MicroActive suite provides an extensive selection of NLDFT models for calculating pore size distributions.
  • Report Options editor allows the user to define reports with on-screen previews. Each report has the ability to possess one summary, tabular, and graphical information pane.
  • Powerful Python programming language allows you to develop extensions to the standard report available within the ASAP 2020 Plus MicroActive application.
Partnership and Support Network:
  • Expertise in application assistance is only a phone call away. Every Micromeritics instrument is backed by a dedicated, knowledgeable staff of experts.
  • Responsive worldwide service and technical support provides the needed security and peace of mind for you, our customers, ensuring that your sample and product development pathways continue to progress.
  • Referenced in an extensive number of peer-reviewed articles in prestigious journals, your ASAP 2020 will link you to a large and growing community of users.
Optional Cryostat:
  • A single-stage cryogenic refrigerator that operates on the Gifford-McMahon refrigeration cycle. It uses helium gas from a helium compressor(s) to offer a wide range of analytical temperatures with milli Kelvin levels of stability.
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3Flex TCD https://staging.gatscientific.com/product/3flex-tcd/ Mon, 04 May 2020 02:55:45 +0000 /?post_type=product&p=698

With the addition of the integral thermal conductivity detector, dynamic chemisorption analyses are available to the user providing the ability to perform temperature programmed reduction (TPR), oxidation (TPO), desorption (TPD), and reactions (TPRx).

The TCD option provides the capability to investigate temperature dependence of specific adsorption or desorption process profiles for catalyst and adsorbents, as well as pulse chemisorption in one, very capable, instrument.

3Flex Chemi-TCD Available Configurations

Pulse chemisorption
  • Adds increased precision, repeatability, and reproducibility by the addition of an injector loop valve with two loop options in addition to four gas inlets, a restrictor for flow control and an industry exclusive; local temperature measurement/control at loop injection

Included Features of the 3Flex TCD option

  • Industry exclusive, localized loop valve temperature measurement and control improves precision, signal detectability and repeatability of the temperature-sensitive TCD detector.
  • Time, temperature, and TCD signal are recorded via the newly enhanced MicroActive software. In addition to data collection a full suite of signal processing tools are available to transform raw data to sample property information. These tools include: peak integration, peak deconvolution (curve fitting) and calculation of active surface area. crystallite size, and dispersion.
  • Full versatility; change from chemisorption experiments to physisorption analysis in minutes.

3Flex TCD – Temperature Programmed Reduction(TPR) Experiment Example

Figure – TPR of Silver Oxide

3Flex TCD – Pulse Chemisorption/ Gas Titration Experiment Example

Figure – Platinum-Alumina CO Pulse Chemisorption Experiment

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3 Flex Chemisorption https://staging.gatscientific.com/product/3-flex-chemisorption/ Mon, 04 May 2020 02:47:06 +0000 /?post_type=product&p=693

Features and Benefits:

  • VCR seals provide higher levels of system cleanliness, low outgas rates, and base pressures. The result is accurate low pressure chemisorption isotherms and the ability to measure oxygen-sensitive materials
  • Standard high-precision mass flow controller provides extremely accurate, programmable gas control
  • High-temperature furnace (up to 1100 °C) provides quick and accurate ramp rates to desired temperature with precise temperature control and repeatability (±1 °C)
  • A total of twelve gas inlets allow multiple probe gases to be investigated maximizing efficiency and range of applications
  • Superior temperature control maintains accuracy and repeatability in monotonic isotherms
  • Design permits transition from chemisorption to micropore physisorption within seconds
  • New high-temperature, precision quartz cell improves accuracy and sensitivity for challenging analyses
  • Heated vapor can also be used as the adsorptive for chemical adsorption analyses
  • Kalrez, Viton, or Buna 0-rings provide maximum flexibility for chemical compatibility
Superior Hardware Versatility
  • A twelve-inlet gas manifold and vapor dosing are standard with the chemisorption capability. Flow control during sample activation utilizes a mass flow controller (MFC) for precise and repeatable sample preparation. The MFC is included in the standard chemisorption hardware.
Sample Analysis Options
  • Gas selection
  • Free space measured at both ambient and analysis temperature
  • Dosing options added to the pressure table give you the ability to change the pressure increment, volume dose increment, and equilibrium interval time between data points
  • Dosing from gas inlets or vapor source
  • Repeat isotherm to analyze reversible sorption
Reported Data Includes
  • Active metal area
  • Crystallite size
  • Irreversible and reversible sorption Monolayer capacity
  • Active metal dispersion
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