ISO 1656:2019

Rubber, raw natural, and rubber latex, natural — Determination of nitrogen content

Publication date: 30 korr 2019

General information

Current stage: 60.60 Effective date: 30 korr 2019

Originator: ISO

Owner: ISO/TC 45/SC 3

Type: International Standard

ICS: 83.040.10

Gjuha: frëngjisht anglisht

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Statusi: Publikuar

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Scope

This document specifies a macro-method and a semi-micro method for the determination of nitrogen in raw natural rubber and in natural rubber latex using variants of the Kjeldahl process.
NOTE The determination of nitrogen in natural rubber is usually carried out in order to arrive at an estimate of the protein content. Minor amounts of non-proteinous nitrogen containing constituents are also present. However, in the dry solids prepared from natural rubber latex, these materials can make a substantial contribution to the total nitrogen content.

Life cycle

PREVIOUSLY

Revises
ISO 1656:2014

NOW

PUBLISHED
ISO 1656:2019
60.60 Standard published
30 korr 2019

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