Petroleum and related products -- Determination of pH of fire-resistant fluids within categories HFAE, HFAS and HFC
This standard has been revised by ISO 20843:2011
ISO 20843:2003 specifies a test method to determine the pH value of non-flammable fluids within categories HFAE, HFAS and HFC, as classified in ISO 6743-4:1999.
A standard is reviewed every 5 years
Revisions / Corrigenda