BS ISO 15901-2:2022 PDF Download

An international standard called BS ISO 15901-2:2022 focuses on the examination of nanopores by gas adsorption. It offers a method for determining the porosity and pore size distribution of solid materials using physical adsorption, more specifically physisorption, and is the second part of the ISO 15901 multi-series. The standard calls for the use of widely used adsorptive gases as CO2, argon, nitrogen, and krypton at specific pressures and temperatures.

The standard ISO 15901-2 can be used to determine the distribution of pores with sizes ranging from 0.4 nm to around 100 nm in a variety of porous materials. The manometric method, which measures the amount of gas adsorbed per unit mass of the sample as a function of pressure at a fixed temperature, is the focus of the standard. It excludes gravimetric techniques that gauge the adsorbent's increased mass.

This standard is helpful for a variety of industries, including chemical and catalyst industries, petrochemicals, particle technology laboratories, polymer and ceramic industries, and the manufacturing of mercury porosimeters. It offers a trustworthy and consistent method for characterizing porous materials, which is crucial for comprehending their functionality and making the most use of them.

Technical revisions are incorporated into BS ISO 15901-2:2022, which replaces BS ISO 15901-3:2007 and BS ISO 15901-2:2006. The addition of the examination of nanopores by gas adsorption, which integrates the characterization of micro and mesopores, is one notable change. The most recent iteration of the standard has also modified the classification of hysteresis loops and adsorption isotherms.