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Norm
ISO 1656:2019
Issue date: 2019 07 30
Rubber, raw natural, and rubber latex, natural — Determination of nitrogen content
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 K...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 21 Pages
Language:
English
ICS
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.
ISO 1656:2019
2019 07 30
Rubber, raw natural, and rubber latex, natural — Determination of nitrogen content
Norm
↖
ISO 1656:2014
2014 10 15
Rubber, raw natural, and rubber latex, natural — Determination of nitrogen content
Norm
ISO 1656:1996
1996 01 18
Rubber, raw natural, and rubber latex, natural — Determination of nitrogen content
Norm
ISO 1656:1988
1988 10 06
Rubber, raw natural, and rubber latex, natural — Determination of nitrogen content
Norm
ISO 1656:1974
1974 02 01
Raw natural rubber and natural rubber latex — Determination of nitrogen
Norm
