TriStar II Plus
Micromeritics Instruments Corporation
Corrosive Gas Compatible Surface Area and Porosity Instrument
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Surface Area and Porosity Instrument
Analytical Versatility/ High Throughput/
The TriStar II Plus is a an automated, three-station, surface area and porosity analyzer that delivers excellent performance and speed of analysis. With three available analysis ports, the TriStar II Plus provides high sample through-put and advanced data analysis features to the user. The unique stainless steel analysis manifold is corrosive resistant and designed for highly accurate gas management for confident and repeatable results.
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.
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.
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.
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.
Available tabular and Graphical Reports:
Single and multipoint BET surface area
Total pore volume
Langmuir surface area and Isotherm reports
Harkins and Jura Thickness Equation
Halsey Thickness Equation
BJH adsorption and desorption
Dollimore-Heal adsorption and desorption
Volume and area distributions by pore size
DFT pore size
DFT surface energy
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.
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