ONORM EN ISO 9397:1997被替代
Plastics - Phenolic Resins - Determination Of Free-formaldehyde Content - Hydroxylamine Hydrochloride Method
出版：Osterreichisches Normungsinstitut
专家解读视频
Defines a method for the chemical determination of free formaldehyde in phenolic resins by potentiometric titration, in aqueous or organic solution. Applies to resins having free-formaldehyde contents not in excess of 15% (m/m). Not for use when hexamethylenetetramine is present. ALSO NUMBERED AS BS 2782 PART 4 METHOD 451N 1997
DIN EN ISO 9397 (1997-05) - Identical
NF EN ISO 9397:1997 - Identical
I.S. EN ISO 9397:1997 - Identical
NS EN ISO 9397 Ed. 1 (1997) - Identical
UNI EN ISO 9397:1999 - Identical
ISO 9397:1995 - Identical
UNE EN ISO 9397:1997 - Identical
SS EN ISO 9397 Ed. 1 (1997) - Identical
SN EN ISO 9397:1997 - Identical
NEN EN ISO 9397:1997 - Identical
BS EN ISO 9397:1997 - Identical
