ISO 4660:2020
Rubber, raw natural — Colour index test

Standard No.

ISO 4660:2020

Release Date

2020

Published By

International Organization for Standardization (ISO)

Latest

ISO 4660:2020

Scope

This document specifies two methods to determine the colour of raw natural rubber according to a standard colour scale: — Method A: colour matching against standard coloured glasses; — Method B: colour determination using colour spectrophotometer. In case of dispute, the preferred method is Method B.

ISO 4660:2020 Referenced Document

• ISO 2393 Rubber test mixes - Preparation, mixing and vulcanization - Equipment and procedures

ISO 4660:2020 history

• 2020 ISO 4660:2020 Rubber, raw natural — Colour index test
• 2011 ISO 4660:2011 Rubber, raw natural - Colour index test
• 1999 ISO 4660:1999 Rubber, raw natural - Colour index test
• 1991 ISO 4660:1991 Rubber, raw natural; Colour index test
• 1977 ISO 4660:1977 Rubber, raw natural — Colour index test