الوصف

Test principle: the static volumetric method, gas adsorption;
Measuring range: surface area ≥ 0.**5M2/g, no upper limit; pore size 0.*****0nm; pore volume 0.***1 cm3/g, no upper limit.
Sorption gas: N2 (high purity); Ar, Kr, CO2, CH4, etc. available
Analysis No: 2 samples tested alternately
Sample Type: powders, granules, fibers, flakes and other materials
Pressure Sensor: ***0torr (**3kpa), *0torr (1.*3kpa); 1torr (0.**3kpa) or 0.1torr (0.***3kpa); pressure accuracy≤± 0.*5%（P.S）
P0 tube: there is a separate P0 tube in every analysis port, two in all, controlled by a separate pressure sensor
Cold trap tube: sample degassing system has a special cold trap device that can effectively remove the water, hazardous substances and other impurities, degassed from the special sample, and it can avoid the contamination of the vacuum system;
Degassing temperature: room temperature ***0℃, accuracy ± 1℃;
Nitrogen Partial Pressure: P/Po 1×***8 _ 0.**8, the minimum resolvable relative pressure 5 × ***7
Ultimate vacuum:≤ *0P*6 Pa（7.5×***9 torr）
Measurement Accuracy: ≤±1.0%（surface area）; ≤0.*1nm（the most frequency micro pore）  ≤±0.*4% (True density)；≤±1.5% (STSA)