10.20 22 qer 2026
ISO
ISO/TC 131/SC 6
International Standard
This document establishes methods for:
— validating online particle counting systems with and without online dilution and associated subsystems
— validating equipment used to prepare secondary calibration suspensions for automatic particle counters;
PUBLISHED
ISO 11943:2021
IN_DEVELOPMENT
ISO/NP 11943-1
10.20
New project ballot initiated
22 qer 2026