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NEN ISO 1157 : 1992
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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PLASTICS - CELLULOSE ACETATE IN DILUTE SOLUTION - DETERMINATION OF VISCOSITY NUMBER AND VISCOSITY RATIO
01-06-1999
12-01-2013
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.
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