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  • JWGB 300 Series
  • High Performance BET Surface Area and Pore Size Analyzer
  • Single-/Multipoint BET Surface Area
  • BJH Adsorption and Desorption
  • Horvath-Kawazoe
  • Saito-Foley
  • Material Research
  • Chemical Engineering
  • New Energy
  • Catalytic Technologies
  • product_bk300
  • Range of Pore Diameter
  • 0.35–500nm
  • Range of Specific Surface Area
  • >0.0001m2/g
  • Repeatability of Median Pore Diameter
  • <0.02
  • Repeatability of Specific Surface Area
  • ±1%
  • Outline
  • The JWGB 300 Series can accurately produce surface area and pore size results of powder materials. According to the different test functions, this series of instruments are divided into three types, there are A, B, and C. Every analysis station has its own dedicated dosing manifold for optimal analysis duration. The C type is configured with 1 torr or 0.1 torr high-sensitive pressure sensors and turbo molecular pump with ultimate pressure of 10-8 Pa. The three analysis stations can also be used for in-situ sample preparation to avoid sample contamination. It can effectively take microporous analysis of microporous materials such as molecular sieve, catalyst, activated carbon, and other microporous materials.
  • DatasheetDatasheet
  • Datasheet
  • Datasheet
  • Features
    • Test Module
    • Internal temperature of test module can be controlled through Real-time monitoring, ensuring accuracy of adsorption detection.
    • Saturated Vapor Pressure P0
    • Using independent P0 pressure sensor for P0 value by inching test, guarantees the reliability of experimental data. Atmospheric pressure input method to determine P0 also be selected.
    • Datasheet
    • Vacuum System
    • It’s a multi-channel, adjustable, and parallel vacuum system. Vacuum degree of this system can be controlled in segments. This design prevents the sample from being pumped into analyzer. Meanwhile, a delicate part was designed for ensuring cleanliness of vacuum system, minimizing dust pollution.
    • Sample Preparation System
    • In addition to external pretreatment devices, three analysis stations can be also used in preparing samples. Degas temperature can be set individually and controlled from ambient to 400 oC.
    • Micropore Distribution
    • Accurately apply the HK method, SF method and other micropore analysis model, the aperture deviation of micropore is less than 0.02 nm.
    • Pressure Sensor
    • Micro 300 with 1torr (selectable 0.1torr) makes the partial pressure of P/P0 up to 10-7 - 10-8 (N2/77K) in the physical adsorption analysis.
    • Datasheet
    • Cold Free Space
    • Cold free space can be corrected by Helium automatically, ensuring accuracy of test results.
      This calibration method is suitable for testing of any powder or particle material.
    • Control of Liquid Nitrogen level
    • Using High volume (3L) Dewar flasks and working with the seal cover assure a constant thermal profile along the length of sample tubes and P0 tubes throughout testing process.
    • Turbo Molecular Pump
    • Molecular pump is a standard configuration part on the Micro 300. The ultimate pressure is up to 10-8 Pa, providing a strong support for micropore analysis in the ultra-low pressure. The smallest micropore diameter can be tested is 0.35 nm.
  • JWGB-BK Control and Analysis Software
    • JWGB-BK Software is intelligent software in operation control, data acquisition, calculation and analysis and report generation on the Windows platform. This software can communicate with the host through the LAN port and remotely control many instruments at the same time.
    • Clear tabular reports include:
        Adsorption and desorption isotherms
        Single-/Multipoint BET surface area
        Langmuir surface area
        STSA-surface area
        pore size distribution according to BJH
    • Datasheet
    • Datasheet
    • JWGB-BK Software adopts a unique intake control method, the pressure in adsorption and desorption process is optimally set in six- stage; this flexible design is helpful for improving test efficiency.
    • Datasheet
    • Changes of the pressure and temperature inside the manifold can be observed directly in the test interface which is convenient for sample test and instrument maintenance.
      Current state of analyzer can be intuitively understood with the indicator light and event bar.
      Each adsorption equilibrium process is dynamically displayed on the test interface. Adsorption characteristics of the sample can be easily understood.
    • Datasheet
  • Typical analysis examples
  • BET repeatability is only 0.0015 m2 / g in the test of very low surface area powder
  • Datasheet Datasheet
  • Analysis value of pore size distribution in activated carbon materials as follows:
  • Datasheet Datasheet
  • Microporous analysis Report of carbon materials as below:
  • Datasheet Datasheet
  • Specifications
  • FeatureMeso 300A Micro 300BMicro 300C
    Adsorbed GasNon corrosive gases, such as N2, Ar, Kr, H2, O2, CO2, CO, NH3, CH4, etc.
    Pressure Sensor at
    Analysis Station
    1000 torr, 31000 torr, 3;
    10 torr, 1 (optional 2 or 3);
    1 torr(0.1torr can be selected),1 (optional 2 or 3)
    1000 torr, 3;
    10 torr, 3;
    1 torr (0.1torr can be selected), 3
    Accuracy: ±0.15% (F.S.)
    Pressure Sensor at P0 Station1000 torr,3
    (Accuracy: ±0.15% (F.S.)
    Degas System The standard configuration is 3 stations in-situ degassing, which can simultaneously degas 3 samples under vacuum heating;
    Another optional external 4-station vacuum heating degassing machine;
    Degas TemperatureAmbient to 400 ℃. Free to set up target temperature.
    Cold Trap 1
    Vacuum Pump Two-stage rotary vane mechanical
    vacuum pump,
    the ultimate pressure is
    6.7*10-2 Pa
    Two-stage rotary vane mechanical
    vacuum pump, the ultimate
    pressure is 6.7*10-2 Pa, optional turbo
    molecular pump
    Turbo molecular pump (ultimate pressure 10-8 Pa) and front
    mechanical vacuum pump
    (ultimate pressure is 6.7*10-2 Pa)
    Analysis Port Samples on the 3 analysis bits can be tested at same time (including P0 test).
    Test Principle Gas adsorption by static-volumetric analysis
    Measurement Range of
    Specific Surface Area
    0.0005 m2/g to the infinity;
    Standard sample repeat accuracy is less than ± 1.0%
    0.0001m2/g to the infinity;
    Standard sample repeat accuracy is less than ± 1.0%
    0.0001m2/g to the infinity;
    Standard sample repeat accuracy is less than ± 1.0%
    Test Range of Pore Diameter 0.35 nm-500 nm; Pore dimension repeatability is less than 0.2 nm in the accurate analysis of materials with pore size greater than 2 nm 0.35 nm-500 nm; Pore dimension repeatability is less than 0.02 nm in the accurate analysis of micropore 0.35 nm-2 nm 0.35 nm-500 nm; Pore dimension repeatability is less than 0.02 nm in the accurate analysis of micropore 0.35 nm-2 nm
    Minimum Pore Volume 0.0001 cm3/g
    Range of Relative Pressure P/P0 10-5-0.99810-6/10-8-0.998 10-8-0.998
    Overall Dimension Depth: 870 mm; width: 570 mm; height: 890 mm; weight: 80 Kg -90 Kg
    Ambient Temperature15-40 oC
    Related Humidity30%-60%
    Electrical SupplyAC220 V ± 20 V, 50/60 HZ, maximum power 300W;
  • Applications
  • Applied FieldTypical Materials Details
    Material Researchceramic powder, metal powder, nanotubeAccording to surface area value of nanotube, hydrogen storage capacity can be predicted.
    Chemical Engineeringcarbon black, amorphous silica, zinc oxide, titanium dioxideIntroduction of carbon black in rubber matrix can improve mechanical properties of rubber products. Surface area of carbon black is one of the important factors affecting the reinforcement performance of rubber products.
    New Energylithium cobalt, lithium manganateIncreasing surface area of electrode can improve Electrochemical reaction rate and promote iron exchange in negative electrode.
    Catalytic Technologiesactive alumina oxide, molecular sieve, zeoliteActive surface area and pore structure influence reaction rate.