10.20 Apr 3, 2026
ISO
ISO/TC 281
International Standard
This document specifies a test method to evaluate the effectiveness of removing nitrogen and phosphorus from sediments through washing using fine bubble technology. It is applicable to freshwater and estuarine environments where sediment-bound nutrients cause water quality degradation.
PROJECT
ISO/NP 4240-6
10.20
New project ballot initiated
Apr 3, 2026