JW-BK300 Surface Area and Micropore Analysis



JW-BK300 surface area and pore size analysis is a new advanced product. it is suitable for study, research and development  particularly.  High precision and high efficiency, it is very popular among the broad masses of customers. This model is ideally suited for the characterization of MOFs, zeolites, activated carbons, adsorbents, and a wide variety of porous and non-porous materials.

Model JW-BK300
Principle Static volumetric method, Nitrogen adsorption

BET surface areasingle point. Multi-point, Langmuir surface area, STSA

Adsorption-desorption isothermal curve determination, BJH



Structural Features Three analysis stations, 3 samples can be degassed in situ, and they can be tested at the same time.
Vacuum System

Two-stage rotary vane mechanical pump, and turbo meleculor pump, the vacuum can reach10-6Pa. Pumping speed can be adjusted from 2ml/s to 300ml/s automatically.

Pressure Tests

0-1000Torr, 0-10Torr, 0-1Torr, precision ±0.15%(F.S

Pressure Range


Test Gas

N2, Ar, Kr, CO2 etc.

Test Range

Surface area ≥0.005M2/g, no upper limits

Mesopore and macropore 2-500nm

Micropore 0.35-2nm

Test Accuracy ±1%
True Density Accuracy 0.04%
Control Method Intelligent control method of the equilibrium pressure, pore size analysis settings are divided into six steps, macropore—mesopore- micropore, automatic control
Degassed Situ treatment, three samples can be set temperature and time individually; temperature: room temperature -400℃; external pretreatment machine can be selected.


theoretical calculations: according to the principle of the static volumetric method, we create a new method of determining cold free space, switching helium / nitrogen automatically. It achieves the temperature real-time measurement and correction, ensuring the reliability of the amount of nitrogen adsorption; through proprietary technology, it can get into the nitrogen adsorption measurements directly for certain samples, improving the test efficiency greatly.

micropore test: the test system includes molecular pump. the vacuum reaches 10-6Pa, and it can fully meet the requirements of testing micropore size distribution; adopting 1000Torr 10Torr 1 Torr, the above three pressure sensors, grading tests, mutualseamless connection, so the test accuracy, especially in low pressure, the resolution can reach 0.003Pa;

control accuracy: the multiple parallel vacuum design; the speed of vacuum pumping can be adjusted from 2 to 300ml/min automatically by original built-in fine-tuning system; the precision of pressure control has reached the international advanced level by the unique equilibrium pressure control method; The pressure controlled interval is less than 0.1KPa, and the pressure of micropore controlled interval is less than 0.01Pa, while achieving the automatic control in highest points of the equilibrium pressure, relative pressure is up to 0.998;

Liquid nitrogen surface control: eliminating the effect of the liquid nitrogen surface by integrated control method and software compensation;

 Po determination: direct determination or atmospheric pressure input method to determine Po values; it can achieve real-time monitoring and correction of Po;

The Dewar: Each sample has its own non-metallic Dewar, its insulation is greatly superior to the metal Dewar;

Automatic control circuit: international advanced self-control circuit and the data acquisition system, the Ethernet interface, greatly improves the reliability of the automatic control, anti-vibration, super anti-jamming capability. The average failure period is more than 25 years, and can be multiple, remote control;

low carbon environmental protection: the original purification device, eliminating the pretreatment impurities and removing harmful gases discharged by the vacuum pump, environmental, high analysis accuracy, walking in the forefront of the industry;

analysis software: rich physical models, intelligent analysis software, and the latest progress, such as the linear selection method of BET surface area for different materials, the database of standard isothermal line for selecting t-plot or MP analysis method for different materials; HK, FS methods for testing the microporous; also can provide CO2 adsorption (DFT method).


Adsorbent (such as activated carbon, silica gel, activated alumina, molecular sieves, activated carbon, calcium silicate, sepiolite, zeolite, etc.);


Ceramic raw materials (such as alumina, zirconia, silicates, aluminum nitride, silica, yttrium oxide, silicon nitride, quartz, silicon carbide, etc.);


Rubber material reinforcing agent (such as nano calcium carbonate, carbon black, silica, etc.);


Battery material (such as lithium cobalt, lithium manganese, graphite, Lithium nickel cobalt oxide, cobalt oxide, lithium iron phosphate, lithium titanate, three elements, three-element material, a polymer, the polymer material, polymer battery materials, alkali-manganese material, lithium ion material, lithium manganese material, alkaline material, zinc-manganese material, quartz powder, magnesium and manganese material, carbon material, zinc-air material, mercury-zinc materials, acetylene black, nickel hydrogen material, nickel-cadmium material, diaphragm, the active material, additives, conductive agent, corrosion inhibitor, manganese powder, electrolytic manganese dioxide, graphite, nickel hydroxide, nickel, the modified graphite material, the positive electrode active material, a negative electrode active substance, zinc powder, etc.) ;


Metal oxide (such as zinc oxide, calcium oxide, sodium oxide, magnesium oxide, barium oxide, iron oxide, copper oxide, etc.);


Magnetic powder material (such as tri-iron tetroxide, ferrite, ferrous oxide, etc.); nano-metal materials (such as nano-silver, iron powder, copper powder, tungsten powder, nickel powder, aluminum powder, cobalt powder, etc.);


Environmental industry (such as pigments and fillers, column packing materials, inorganic pigments, calcium carbonate, silicon oxide, mineral powders, sediments, suspended matter, etc.);


Inorganic powder material (such as titanium oxide, titanium dioxide, titanium dioxide, etc.);


Nanomaterials (such as nano-powder materials, nano-ceramic materials, etc.);


Rare earth, coal, cement, energy storage materials, catalysts: (diatomaceous earth)

Purifying agent, filter aid, the luminescence of rare earth powder materials, powder materials, powder materials, ultra-fine fibers, porous fabric, composite materials such as powders and particulate materials than detection of surface area and pore size analysis, widely used in universities and research centers the material research and the powder material production enterprise product quality monitoring.



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