T/CSP 16-2024 Particle Technology Interlaboratory Comparison Guide for Gas Physical Adsorption Instruments (BET) Surface Area Detection

Scope

Scope: This document describes the inter-laboratory comparison method for the determination of the specific surface area of solid substances using a gas adsorption instrument, including the design of the method, data processing, and result evaluation. This document is applicable to quality control activities for the determination of the specific surface area of solid substances using the BET method of gas adsorption, and it can also be referenced for measurement audits and capability verification. Main technical content: The gas adsorption method is a method used to determine the specific surface area of solid materials, and it is widely used in the characterization of powder materials and porous materials. It plays an important role in understanding and characterizing the physical and chemical properties of solid materials. The specific surface area of solid materials has a significant impact on their adsorption performance, catalytic activity, and reaction rate, so it is necessary to conduct a rigorous and accurate determination of the specific surface area of solid materials. The inter-laboratory comparison of the specific surface area determination using a gas adsorption instrument is an activity in which laboratories use such equipment to determine the specific surface area of solid materials. By comparing the differences between the measured values and the specified values, it can be determined whether the participating laboratories need to pay attention to the reasons causing these differences. Therefore, it is very important to select appropriate criteria for result evaluation.

Development Information

Related Standards