ISO 1409:2020

Published (Edition 6, 2020)

This publication was last reviewed and confirmed in 2025. Therefore this version remains current.

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Abstract

This document specifies two methods for the determination of the surface tension of polymer dispersions and rubber latices (natural and synthetic).

— Method A is the ring method (Du Noüy ring method).

— Method B is the plate method (Wilhelmy plate method).

Method A is suitable valid for polymer dispersions and rubber latices with a viscosity less than 200 mPa·s.

Method B is not suitable for polymer dispersions and rubber latices containing cationic surfactants.

Methods A and B are also suitable for prevulcanized latices and compounded material.

In case of dispute, the preferred method is method A (the ring method).

This standard contributes to the following Sustainable Development Goal