ISO 21490 pdf download Rubber and rubber products — Determination of 2-mercaptobenzothiazole content by high performance liquid chromatography (HPLC) This document specifies a quantitative test method to determine the 2-mercaptobenzothiazole contentin rubber and rubber products by high performance liquid chromatography (HPLC). This document delivers a method for quantifying 2-mercaptobenzothiazole in rubber products for abetter selection of curing conditions. This document...