标准摘要
[中文适用范围]： 规定了测定未增塑 PVC 的某些稳定剂的可萃取性的测试方法，以验证萃取量不超过一定浓度。 管状试件在固定时间内预洗。 此后，用酸化（CO）水分三步萃取它们，并测定萃取的稳定剂（铅盐或锡的有机衍生物）的量。 未指定分析方法。 [外文原描述]： Specifies a method of test for the determination of the extractability of certain stabilizers of unplasticized PVC in order to verify that the extracted quantities do not exceed a certain concentration. Tubular test pieces are prewashed during a fixed time. After this they are extracted with acidified (CO 2 ) water in three steps and the quantity of the extracted stabilizers (lead salts or organic derivates to tin) shall be determined. The analytic methods are not specified.
英文名称Unplasticized polyvinyl chloride (PVC) pipes for potable water supply — Extractability of lead and tin — Test method