Description
| Type | Surface DX | Surface DA |
| Test principle | Low temperature nitrogen adsorption, dynamic method | |
| Distinction | Adventurous adsorption technique | Traditional desorption technique |
| Recording adsorption data, same as static volumetric method. Separate analysis stations are suitable for testing sample with low surface area (< 10 m2/g). | Recording desorption data, analysis stations are not mutual independence but parallel.
It is not suitable for accurately measure sample with low surface area (less than 10 m2/g) illustrated by gentle peak. |
|
| Test Method | Reference method;
Single point BET; Multi-point BET. |
Reference method;
Single point BET; Multi-point BET. |
| Adsorbate and Carrier Gas | High purity nitrogen (99.999%);
High purity helium (99.999%). |
|
| Range of P/P0 | 0.05~0.3 | |
| Range of BET Surface Area | 0.01 m2/g to the infinity; (It is not suitable for detecting micropore materials). | |
| Repeatability | Typically better than ±1.0% (carbon black) | Typically better than ±1.5% (carbon black) |
| Analysis Stations | 4 | 4 |
| Efficiency | 5 min per sample (reference method);
25 min per sample (multi-point BET) |
9 min per sample (reference method);
30 min per sample (multi-point BET) |
| Overall Dimension | Depth: 610 mm; Width: 460 mm; Height: 680 mm; Weight: 48 kg. | |
| Applied Field | Typical Materials | Details |
| Material Research | ceramic powder, metal powder, nanotube | According to surface area value of nanotube, hydrogen storage capacity can be predicted. |
| Chemical Engineering | carbon black, amorphous silica, zinc oxide, titanium dioxide | Surface area of carbon black is one of the important factors affecting the reinforcement performance of rubber products. |
| New Energy | lithium cobalt, lithium manganate | Increasing surface area of electrode can improve Electrochemical reaction rate and promote iron exchange in negative electrode. |
| Catalytic Technologies | active alumina oxide, molecular sieve, zeolite | Active surface area and pore structure influence reaction rate. |
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