BET Surface Area
BET Surface Area
Make: BEL
Model: BELLSORP MAX
Year of purchase: 2020
Funded by:
Location: TSAMRC Lab
Contact email: tsamrclab@cens.res.in
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  • Measurement method : Volumetric gas adsorption method + AFSMTM
  • Adsorptive : N2, and Ar
  • Number of samples to be measured :-
  • -Standard mode (P/P0 = 10-4 to 0.997): 1 to 3 samples
  • -High precision mode (P/P0 = 10-8 to 0.997): 1 to 2 samples (according to AFSMTM)
  • Specific surface area measurement range : 0.01 m2 g-1 and above (N2 / 77K)
  • Pore size distribution : 0.32 to 500 nm pore diameter
  • Pressure sensor :-
  • -133 kPa (1000Torr) : 5 units (Accuracy: ±0.15 % of F.S.
  • - 1.33 kPa (10Torr) : 2 units (Accuracy: ±0.5 % of R.)(OP. + 1 unit)
  • - 13.3 Pa (0.1Torr) : 1 unit (Accuracy: ±0.15% of R.)(OP. + 1 unit) depend on manifold temp.
  • Pressure resolution : 1.6×10-6 Pa
  • Manifold temperature : 50 °C
  • Dewar vessel Volume : 2.6 L Holding time: 60 h
  • Sample cell : About 1.8 cm3
  • Exhaust system : Turbo molecular pump + Rotary pump: Attainable vacuum: 6.7 x 10-7 Pa or below
  • Vacuum gauge : Pirani + Cold cathode gauge (ATM - 5x10-7 Pa)
  • Physical : W565 x H850 x D580 mm, 84 kg (Not includes vacuum pump, computer and its peripheral)
  • Measurement program : Pretreatment and adsorption/desorption isotherm measurement
  • Power Single phase: AC100-120V or 200-240V / 1500VA (400VA is for vacuum pump)
  • Analysis program (BELMasterTM) : -
  • ・ Adsorption/desorption isotherm
  • ・ Specific surface area by Langmuir method
  • ・ Pore volume calculation by DA method
  • ・ Micro-pore analysis by MP method, HK method, and SF method
  • ・ Specific surface area by BET method
  • ・ Mesopore analysis by DH method, CI method, BJH method
  • ・ Micropore volume and micro-pore diameter by t-method, s method
  • ・ Equivalence diffential adsorption heat analysis
  • ・ Pore size distribution analysis by the NLDFT/GCMC (BELSimTM) (Optional)
  • Surface area
  • Pore Size
  • Pore size distribution
  • Pore volume
Modes Duration (hrs)
Volumetric gas adsorption method + AFSM 10hrs
Sl. No. - Category Fees ( in Rs/- ) + additional 18% GST