Nitrogen adsorption method, single and multi-layer adsorption theory. Capillary condensation theory,dynamic gas chromatograph method BET method (single and multi-point method), Direct reference comparison. Adsorption/desorption isotherm measurement. BJH
- Computer System
Nitrogen adsorption method, single and multi-layer adsorption theory
Capillary condensation theory, dynamic gas chromatograph method
BET method (single and multi-point method), Direct reference comparison
Adsorption/desorption isotherm measurement
BJH pore size distribution measurement, total pore volume and average pore size measurement
BET surface area measurement method (single and multi-point method),
Langmuir BET surface area measurement and direct reference comparison method
- Technological parameters
- Working gas：
High purity N2 (adsorbate) and He (carrier gas)
- Gas flow volume：
≤100ml/min
- Flow volume display：
Digital display system
- Nitrogen partial pressure：
0.05~0.98 (automatically calculated)
- Working pressure：
Atmosphere
- Measurement range：
2~200nm for pore size, surface area ≥0.1M2/g (no up limit)
- Sample number：
Pore size characterization: 2
BET surface area samples under testing: 2
Samples for reference comparison: 1
- Calibration method：
Set volume nitrogen (pore size and BET surface area method), Solid standard sample (for reference comparison method)
- Flow volume control：
High sensitive pressure/f low volume regulators system
- Flow volume measurement：
High accurate gas flow volume sensor
- Flow resolution：
0.1 ml/min
- Measurement time：
pore size distribution 2~4 hours for each sample;
≤20minutes (BET method) for each sample;
10minutes (Reference comparison method)
- Measurement repeatability：
≤±3% (specified elsewhere for smaller surface area)
Stainless steel liquid nitrogen vacuum flask
- Dimension：
50×35×59(㎝)
- Weight：
34 kgs
Features:
- Gas-driven noise-free lift-up-down system, touch mode for program control
- Constant circuit design: enhanced signal stability, signal amplify: ×128 (max.)
- Adopt high sensitive thermal conducting sensor with self-monitoring and protection
- Auto-zero-set for flow volume sensors
- Upgraded multi-functional specialized software, Data collection: 100 times/second
- 16 bit A/D converter
- Multi-functional data process for BET and reference comparison method
Excellent anti-disturb and compatibility performance
Self-monitoring and correction functions
Adsorption/Desorption real-time graph display for the whole process
Test result export and printout
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Porous measuring 
