ASTM D4670-2017 聚氨基甲酸酯原料试验方法：多羟基化合物中悬浮物的测定 Standard Test Method for Polyurethane Raw Materials:Determination of Suspended Matter in Polyols

1.1 This test method covers a procedure for visual inspection to determine the presence of insoluble foreign material in polyols. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 1: There is no known ISO equivalent to this standard.