Published
This document specifies a method for the determination of water-soluble sulfates in all types of pulp, paper and board. The lower limit of the determination is 20 mg of sulfate ion per kilogram of dry sample.
WITHDRAWN
ISO 9198:2001
PUBLISHED
ISO 9198:2020
90.93
Standard confirmed
Dec 5, 2025
Paper, board and pulp — Determination of water-soluble sulfates
90.93 Standard confirmed