GB/T 42269-2022
Determination of pore size for membranes—Gas permeation method (English Version)

Standard No.

GB/T 42269-2022

Language

Chinese, Available in English version

Release Date

2022

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 42269-2022

Scope

This document describes a method for determining the average pore size of separation membranes using the gas permeation method. This document is applicable to the test of the average pore diameter of flat membranes and hollow fiber membranes with a pore diameter of 0.01 μm to 0.2 μm in a dry state.

GB/T 42269-2022 Referenced Document

• GB/T 20103-2006 Technical terms for membrane separation
• GB/T 2918-2018 Standard environment for conditioning and testing of plastic specimens
• GB/T 8979-2008 Pure nitrogen and high purity nitrogen and ultra pure nitrogen

GB/T 42269-2022 history

• 2022 GB/T 42269-2022 Determination of pore size for membranes—Gas permeation method