2023年12月22日发(作者：纽曼p308)

TriStar II Plus

TriStar II Surface Area and Porosity AnalyzerAnalytical Versatility/ High Throughput/ Small FootprintSurface area and porosity are important physical properties that influence the quality and utility of many

materials and products. Therefore it is critically important that these characteristics be accurately determined

and controlled. Likewise, knowledge of surface area and especially porosity often is an important key to under-standing the formation, structure, and potential application of many natural Sample Throughput/ Analytical Versatility

The TriStar II is a fully automated, three-station, surface area and porosity analyzer that delivers high-quality data at

an affordable price. It is capable of increasing the speed and efficiency of routine quality control analyses, yet has the

accuracy, resolution, and data reduction capability to meet most research requirements. The TriStar II also features a

Krypton Option, allowing measurements in a very low surface area range. The instrument combines versatility in

analysis methods and data reduction to allow the user to optimize analyses to specific applications.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.

For additional throughput, four TriStars can be operated with one computer•Surface areas as low as 0.01 m2/g can be measured with the standard nitrogen

system. The TriStar II accommodates the use of argon, carbon dioxide, and other

systemnon-corrosive gases such as butane, methane, or other light hydrocarbons. A

non-coKrypton Option can extend surface area measurements to as low as 0.001 m2/gKryptoA dedicated Po port is standard, allowing the measurement of saturation pressure on

•A dedia continuous basis. Saturation pressure can be entered manually, measured

a contcontinuously, or collected over the sample. The TriStar II provides the flexibility to

contincontrol and fine-tune analysis speed and accuracycontro•Incremental or fixed dosing routines prevent overshooting pressure points while

Incremminimizing analysis timeminimFree s•Free space can be measured, calculated, or manually entered providing maximum

flexibility in accommodating special sample types and emphasizing speed when

flexibineeded. Helium is not required

needeEnhan•Enhanced product support features include: video clips; Ethernet communication

between the computer and TriStar; bar code reader capability; diagnostic software;

betweability to perform remote diagnostics via the internet; and the ability to read and

abilitycompare historical TriStar data to TriStar II datacompa•A 2.75-liter dewar and extended length sample tubes allow complete adsorption and

A 2.75desorption isotherms to be collected without operator interventiondesorpThe Tri•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

obserdetailsIntuiti•Intuitive and powerful Windows®-based software allows more versatility in data

archiving and networking. However, the most powerful features of this software are

archivfound in its expanded range of data reduction and reporting. SPC reports, isotherm

foundand thickness models, isosteric heat of adsorption, and integrated DFT models are

and thincludedincludTriStar II•Optional sample preparation devices are available combining flowing gas and/or

Optionvacuum with heat to remove atmospheric contaminants, such as water vapor and

vacuuadsorbed gas, from the surface and pores of the sample•An attractively designed cabinet combines a small footprint with easy accessibility

Operating SoftwareThe 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, scalable and editable graphs, and

customized reports are easily 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.

TriStar IITabular and Graphical Reports:

••••••••••••••••Single and multipoint BET surface areaTotal pore volumeLangmuir surface area and Isotherm reportst-Plot- Harkins and Jura Thickness Equation- Halsey Thickness Equation- Carbon STSA- Broekhoff-de Boer- Kruk-Jaroniec-SayariBJH adsorption and desorption- Standard- Kruk-Jaroniec-Sayari correctionDollimore-Heal adsorption and desorptionMesopore

- Volume and area distributions by pore size

MP-MethodHKSaito-FoleyChang-YangDFT pore sizeDFT surface energySummary ReportSPC reportsValidation reports

TriStar II Plus Surface Area and Porosity AnalyzerMicromeritics' TriStar II Plus is a state-of-the-art instrument suited for use in both quality control and research

environments. Intended for laboratories that require high throughput and the highest quality data, it contains all the

capabilities of the TriStar II with additional hardware and software ed Hardware and Software Features••••••••The unique stainless steel analysis manifold is corrosive resistant and designed for highly-accurate gas managementImproved dewar design provides more than 40 hours of continuous temperature controlAvailable in a krypton capable model for the analysis of very low surface area materialsIntuitive MicroActive software gives the user the ability to interactively evaluate isotherm data and reduces the time

required to obtain surface area and porosity resultsUser-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 applicationAn innovative dashboard monitors and provides convenient access to real-time instrument performance indicators

and maintenance scheduling informationCapable of utilizing two isotherms (CO2 and N2) for calculating pore size diameter via NLDFT for micropore analyses of

carbonsData 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 ficiently determine surface area and

porosity of their materials•Improved ability to overlay files (up to 25) including mercury intrusion usion

data with a file add and subtract feature•User selectable data ranges through the graphic interface allows direct direct

modeling for BET, t-Plot, Langmuir, DFT interpretation, and much moremorewith •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 panesTriStar II Plus

Enhanced Software Capabilities, Data Reduction Features,

and Instrument MonitoringMicroActive for TriStar II Plus SoftwareThe 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 rangeGas Adsorption and Mercury Intrusion Overlay CapabilityMicroActive 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 y of BJH desorption and mercury intrusion

log differential pore size distributions for alumina

pelletsPython Programming Language IncludedThe 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

isotherm models or calculations are easily

added to the report system. The Python interface to

MicroActive allows users to customize their reports

and extend the utility of MicroActive.

Dual DFT

The Dual DFT NLDFT model allows the user to combine the informa-tion 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 r II PlusThis 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 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.

External Sample Preparation DevicesMicromeritics’ 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 quality of the data produced by surface area and pore

volume analyses depends greatly on the cleanliness of the sample surface. All Micromeritics’ sample preparation

devices accept helium, nitrogen, argon, and other non-corrosive surface and pores. With six degassing stations, this sample preparation unit lets you choose the temperature, gas,

and flow rate best suited for your sample material and application. Needle valves allow the user to introduce the

flowing gas slowly to prevent fluidization of FlowPrep™ 060 applies both heat and a stream of inert gas to the sample for removal of adsorbed contaminants from

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 VacPrep offers the user a choice

of vacuum or gas flow on each of the six degassing stations. Needle valves allow the user to introduce the flowing gas

or vacuum slowly to prevent fluidization of inants. Temperature, ramp rates, and soak times of each sample are individually controlled on the six degas-sing stations by a computer. This sample preparation unit contains two serial ports, one for connecting to the

computer and the other for connection to an additional SmartPrep. Up to five ramps and soaks are allowed. All degas

information is integrated into the sample data file for future SmartPrep™ 065 applies a stream of flowing gas over the sample at elevated temperatures to remove adsorbed

Model 021 LN2 Transfer SystemMicromeritics’ Model 021 LN2 Transfer System is useful

for any number of tasks where frequent needs arise

for relatively small volumes of liquid nitrogen or argon.

The LN2 Transfer System makes it easy to fill dewars

with liquid cryogen for laboratory or general purposes.

The system includes a large storage dewar with a

47-liter capacity that can hold liquid nitrogen or argon

up to 30 days allowing convenient and

cost-efficient use of your 021 LN2 Transfer System operates at ambient

pressure and replaces typical cryogen storage vessels

which are pressurized to force the cryogen through

the discharge line. With Micromeritics’ system, cryo-gen is transferred by a centrifugal pump. Flow starts

and stops immediately when the pump is turned on or

off. The discharge rate is continuously adjustable to a

maximum flow of 3 L/min. The discharge line is

insulated to prevent frosting and icing during use, and

flexible to allow easy positioning for discharge into

almost any type of receiving vessel. The system

includes a mobile platform which easily rolls from

location to onal accessories are available for special

2 Transfer

SystemTo request a quote or additional product information, visit

Micromeritics web site at , contact your

local Micromeritics sales representative or our Customer Service

Department at (770) 662-3636

ApplicationsPharmaceuticals - Surface area and porosity play major roles in the purification, process-ing, blending, tableting, and packaging of pharmaceutical products as well as their useful

shelf life, dissolution rate, and cs - 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 opera-tions, or pollution controls in wastewater Black - The wear lifetime, traction, and performance of tires are related to the

surface area of carbon blacks used in their production.

Catalyst -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 onics - 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 ace - Surface area and porosity of heat shields and insulating materials affect

weight and ence - 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.

TriStar II PlusFuel Cells - Fuel cell electrodes require high surface area with controlled porosity to

produce optimum power density.