NS EN ISO 1157 Ed. 1 (1999)废止
Plastics - Cellulose Acetate In Dilute Solution - Determination Of Viscosity Number And Viscosity Ratio
出版：Norwegian Standards (Norges Standardiseringsforbund)
专家解读视频
Defines a procedure which determines viscosity number and ratio of cellulose acetate in dilute solution in a dichloromethane and methanol mixture. Covers cellulose acetate with an acetic yield of not less than 50%.
NEN EN ISO 1157:1999 - Identical
ISO 1157:1990 - Identical
SS EN ISO 1157 Ed. 1 (1999) - Identical
UNE EN ISO 1157:2000 - Identical
I.S. EN ISO 1157:1999 - Identical
UNI EN ISO 1157:2001 - Identical
NF EN ISO 1157:1999 - Identical
ONORM EN ISO 1157:1999 - Identical
DIN EN ISO 1157 (1999-09) - Identical
BS EN ISO 1157:2000 - Identical
SN EN ISO 1157:1999 - Identical
