VDSorb-300i Dynamic Surface Area Analyzer Product Introduction VDSorb-300i uses the principle of continuous flow chromatography catalyst surface area. Sample particles placed in liquid nitrogen environment, nitrogen and helium mixed after a certain proportion of particles passing through the sample surface. At this point nitrogen adsorption at the sample surface, resulting in a mixed gas composition changes, the thermal conductivity detector detects this change, and then calculate the specific surface area and analyzed by specialized software. Application: rubber materials: carbon black, silica, calcium carbonate, zinc oxide, titanium dioxide, silica gel, silica and other chemicals; battery materials: lithium cobalt oxide, lithium manganese oxide, lithium iron phosphate, graphite, ternary material diaphragm and other positive and negative electrode material; catalyst material: petrochemical, chemical, fine chemical, pharmaceutical, food, agriculture and other catalyst materials; food additives: starch, activated clay, bentonite and other food additives; magnetic materials: iron oxide, ferrite magnetic powder material, manganese tetroxide; adsorbents: activated alumina adsorbents, molecular sieves, zeolites, activated carbon; nanomaterials: nano-ceramic powder (aluminum oxide, zirconium oxide, yttrium oxide, nitrogen silicon, silicon carbide, etc.), the metal nano powder (silver powder, iron powder, copper powder, tungsten powder, and nickel powder), nano-polymer materials, carbon nanotubes and other nanomaterials; Other Applications: superfine fiber, porous web composite materials, minerals, soil, mud, sediment, suspended solids, special paper and other special materials. Test function: single-point BET surface area; multi-point BET surface area; Langmuir surface area; direct contrast ratio of surface area, the average particle size estimation; technical parameters of the test range: the specific surface area 0.01 (m2 / g) - to no limit; repeat Accuracy: The specific surface area ≤ ± 1.0%; partial pressure range: multi-point BET0.05-0.35, direct comparison method 0.3 or 0.4; test gas: high purity nitrogen (99.999%); high-purity helium (99.999%); degassing temperature: room temperature -400 ℃, accuracy ± 1 ℃; Features test efficiency: the direct comparison method for each sample average 5min, 5-point BET average for each sample 30min, automatic real-time test results obtained by the software; analysis stations: four samples bit, multi-point BET analysis can be carried out simultaneously tested four samples, direct comparison method can be analyzed three samples tested at the same time; lifting system: automatic lifting system degassing system: ectopic vacuum degassing pretreatment system module design, can be carried out simultaneously degassing four samples; high precision mass flow controller, automatically adjusts the ratio of nitrogen and helium according to the experimental procedure;