Vapor Adsorption

	To investigate water vapor sorption behavior of material is important both from scientific and industrial standpoint.Measuring water vapor isotherms gives a lot of information about sorption properties such as hydrophric and hydrophobic property of particle surface. But It is difficult and laborious. The BELSORP-aqua3 makes it possible to obtain not only water but other vapor adsorption isotherms with simple operation. The unique and the longest years of experiences result in the technology. This is the powerful tool for the researcher in the pharmaceutical, food industry, material science and other field.

	This instrument is our high-end volumetric gas adsorption instrument. To obtain useful information about micropore, it is important to measure adsorption isotherm from low relative pressure with accuracy. The BELSORP-max is designed for wide range adsorption isotherm for surface area and pore size distribution analysis. It can measure adsorption isotherms from relative pressure as low as 1 x10^-8 (N2 at 77K, Ar at 87K), using a 13.3Pa pressure transducer. Also AFSM, the new method for free space measurement, is applied and adsorption isotherm can be measured with high accuracy. Chemisorption option enables unattended chemisorption measurement from pretreatment with step programs.