ISO 7491 : 2000(R2017)现行
DENTAL MATERIALS - DETERMINATION OF COLOUR STABILITY
出版：International Organization for Standardization
专家解读视频
Defines a procedure to determine the colour stability of dental materials after exposure to water and light.
GOST ISO 7491 : 2012 - Identical
DS EN ISO 7491 : 2000 - Identical
ADA 80 : 2001(R2013) - Identical
DIN EN 27491 : 1991 - Identical
BS 6790(1987) : 1987 - Identical
IS 12181 : 2018 - Identical
NEN ISO 741991 : 1991 - Identical
GOST R ISO 7491 : 1995 - Identical
I.S. EN 27491:1992 - Identical
NBN EN 27491 : 1992 - Identical
UNE EN 27491 : 1992 - Identical
NF EN 2741991 : 1991 - Identical
PN EN ISO 7491 : 2002 - Identical
CSA Z349.16 TO Z349.28 : M92 - Identical
