饲料中挥发性盐基氮的测定
Determination of the total volatile basic nitrogen in feed
2015-10-09
BS ISO 25761-2014
Plastics. Polyols for use in the production of polyurethanes. Determination of basicity (total amine value), expressed as percent nitrogen
塑料 聚氨酯生产用多元醇 测定碱度（总胺值） 以氮百分比表示
2014-05-31
ISO 25761-2014
Plastics — Polyols for use in the production of polyurethanes — Determination of basicity (total amine value), expressed as percent nitrogen
塑料制品；聚氨酯生产用多元醇——测定碱度（总胺值） 以氮百分比表示