90.20 Standard under periodical review Jan 15, 2024
ISO
ISO/TC 45/SC 3 Raw materials (including latex) for use in the rubber industry
International Standard
83.040.20 Rubber compounding ingredients
Published
This document specifies a general method for determining the aggregate size distribution (ASD) of silica by using a disc centrifuge according to the principle of sedimentation. As pre-stage the silica is de-agglomerated in water using strong ultrasonic power treatment.
The method is used for precipitated silica.
PUBLISHED
ISO 20927:2019
90.20
Standard under periodical review
Jan 15, 2024