30.99 CD approved for registration as DIS Sep 19, 2023
ISO
ISO/TC 275 Sludge recovery, recycling, treatment and disposal
International Standard
This international standard is intended to provide a protocol for the interlab validation of methods for the characterization of sludge/biosolids physical properties considered that in most cases fresh sludge samples cannot be circulated to several laboratories in different countries for validation purposes as uncontrolled variations of their characteristics would occur.
IN_DEVELOPMENT
ISO/CD 19658
30.99
CD approved for registration as DIS
Sep 19, 2023