ISO-1656 › Rubber, raw natural, and rubber latex, natural - Determination of nitrogen content
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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.
To find similar documents by classification:
83.040.10 (Latex and raw rubber)
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Document Number
ISO 1656:2019
Revision Level
5TH EDITION
Status
Current
Publication Date
July 1, 2019
Committee Number
ISO/TC 45/SC 3