Rubber, raw. Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber (NBR) - Kjeldahl method1 Scope This document specifies a method for the determination of the bound acrylonitrile content in NBR by an automatic analyser which uses the Kjeldahl method. The method is also applicable to XNBR (carboxylic acrylonitrile butadiene rubber) and NBIR (acrylonitrile butadiene isoprene rubber) as well as NBR latex. NOTE This document and ISO 246981 can give different results on the same rubber sample.

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