NEN ISO 1157:1992被替代
Plastics - Cellulose Acetate In Dilute Solution - Determination Of Viscosity Number And Viscosity Ratio
出版：Nederlands Normalisatie Instituut
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基本信息
标准编号： NEN ISO 1157:1992
发布时间：1992/5/1 0:00:00
标准类别：Standard
出版单位：Nederlands Normalisatie Instituut
标准页数：4
标准简介
Defines a method for determining the viscosity number and viscosity ratio of cellulose acetate in dilute solution in a mixture of dichloromethane and methanol. Applies to cellulose acetate with not less than 50% acetic acid yield.
替代本标准的新标准
等同采用的国际标准
ISO 1157:1990 - Identical
