UNI EN 31427:1997被替代
Determination Of Silver In Silver Jewellery Alloys - Volumetric (Potentiometric) Method Using Potassium Bromide
出版：Italian Standards
专家解读视频
1997 [31/05/1997]
EN 31427:1994 - Identical
UNE EN 31427:1996 - Identical
SS EN 31427 Ed. 1 (1994) - Identical
NF EN 31427:1995 - Identical
I.S. EN 31427:1994 - Identical
NBN EN 31427:1994 - Identical
BS EN 31427:1994 - Identical
ONORM EN 31427:1994 - Identical
DIN EN 31427 (1995-04) - Identical
SN EN 31427:1994 - Identical
