DS DS/EN ISO 1157
DS DSEN SO 1157 1999-AUG-16 Plastcs - Cellulose acetate n dlute soluton - Determnaton of vscosty number and vscosty rato
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This standard specifies a method for determining the viscosity number and viscosity ratio of cellulose acetate in dilute solution in a mixture of dichloromethane and methanol.