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The BELSORP MAX II is a versatile instrument which measures specific surface area/pore size distribution, vapor adsorption and chemisorption.

OVERVIEW

The BELSORP MAX II analyzer allows for comprehensive surface characterization such as micropore analysis by measuring adsorption isotherms from extremely low pressure, or hydrophilicity/hydrophobicity by water vapor adsorption.

PRODUCT FEATURES

  • Highest throughput thanks to simultaneous measurement of up to 4 samples
  • New advanced GDO function permits optimum gas dosing
  • The most suitable measurement conditions are automatically set based on the user’s stored adsorption isotherm data
  • An advanced system of direct evacuation and intelligent valve control reduces the measurement time significantly
  • High precision vapor adsorption measurement under strict temperature control
  • High precision measurement by Advanced Free Space Measurement (AFSMTM)
  • Automatic LN2 supply and a dedicated heater enable fully automatic seamless process control from pre-treatment to measurement
  • With advanced GCMC method: allows to perform more precise and higher resolution PSD analysis, considering the interaction of actual material surface and adsorbate molecules, than the conventional NLDFT (approx. calculation) method
  • The measurement process status and the results can be checked by remote monitoring function using an e-mail system

TECHNICAL SPECIFITATIONS

Measurement principle Volumetric method + AFSM™
Adsorption gas N2, Ar, Kr, CO2, H2, O2, CH4, NH3, butane, and other non-corrosive gases
Adsorption vapor H2O, MeOH, EtOH, C6H6, and other non-corrosive vapor
Gas ports 2 ports (optional: 7 ports; 12 ports max.)
Number of measurements
(High Accuracy mode)		 BELSORP MAX II & MAX II HV: Max. 4 ports simultaneously (3 ports in High Accuracy mode)
BELSORP MAX II HP: Max. 3 ports simultaneously (2 ports in High Accuracy mode)
Measurement range (specific surface) 0.01 m2/g and above (N2)
0.0005 m2/g and above (Kr)
(depending on sample density)
Pore size distribution (Diameter) 0.35 - 500 nm
Low pressure isotherm BELSORP MAX II & MAX II HP: p/p0 = 10^-8
(N2 @77K, Ar @87K)
BELSORP MAX II HV: p/p0 = 10^-6
(N2 @77K, Ar @87K)
Vapor adsorption BELSORP MAX II & MAX II HP: p/p0 = ~0.95 @40°C
BELSORP MAX II HV: p/p0 = ~0.95 @70°C
High pressure gas sorption BELSORP MAX II HP: 900 kPa (Port 2)
Pressure transducer (1 MPa: 7500 Torr) BELSORP MAX II HP: 1 unit
Pressure transducer (133 kPa: 1000 Torr) BELSORP MAX II: max. 6 units
BELSORP MAX II HP: 5 units
BELSORP MAX II HV: 6 units
Pressure transducer (1.33 kPa: 10 Torr) BELSORP MAX II: max. 4 units
BELSORP MAX II HP: 3 units
BELSORP MAX II HV: 4 units
Pressure transducer (0.0133 kPa: 0.1 Torr) BELSORP MAX II: max. 3 units
BELSORP MAX II HP: 2 units
Thermostatic air oven BELSORP MAX II & MAX II HP: 50°C
BELSORP MAX II HV: 80°C
Vacuum gage / pump Turbo molecular pump + rotary pump
Sample tube Standard tube, approx. 1.8 cm3 (optional: 5 cm3)
Dewar vessel Volume: 3.8 l
Holding time: 80 h
Pretreatment heater 50 - 550°C
Water bath -10 - 70°C
Analysis software BELMaster™ 7 Adsorption isotherm, BET specific surface area I type (ISO9277), BET automatical analysis, Langmuir supecific surface area, BJH, DH, CI, INNES method, t-plot
Analysis software BELMaster™ 7 cont. HK, SF, CY method, NLDFT / GCMC (OP BELSim™), MP method, Dubinin-Astakhov method, Difference adsorption isotherm, molecular probe, adsorption rate analysis (opt.)
Dimensions (W x H x D) 650 x 1020 x 680 mm
Weight (main body) 120 kg
Utility - Gas He, adsorption gas: 0.1MPa
Joint: 1/8" Swagelok joint
Utility - Power Main unit: AC 100 - 120 V / 200 - 240 V, 1500 W (incl. rotary pump), 50 / 60 Hz
Heater: AC 100 - 120 V / 200 - 240 V, 900 W, 50 / 60 Hz
Environmental conditions Temperature: 10 - 30°C
Humidity: 20 - 80% RH
CE certified yes

BROCHURE