I.S. EN 21559:1992被替代
Dentistry - Alloys for Dental Amalgam
出版：National Standards Authority of Ireland
专家解读视频
Specifies requirements and methods of test for alloys composed mainly of silver, tin and copper, in either the powder or tablet form, suitable for the preparation of dental amalgam.
NF EN 21559:1992 - Identical
ONORM EN 21559:1992 - Identical
DIN EN 21559 (1992-03) - Identical
BS EN 21559:1992 - Identical
UNI EN 21559:1993 - Identical
SS EN 21 559 Ed. 1 (1993) - Identical
ISO 1559:1995 - Identical
