GB/T 2441.9-2010
Determination of urea - Part 9: Methylenediurea content - Spectrophotometric method
T/QGCML 2310-2023
T/QGCML 2309-2023
T/QGCML 2308-2023
T/QGCML 2307-2023
GB/T 2441.9-2001
Determination of Urea—Determination of methylenediurea content—Spectrophotometric method
GB/T 33317-2016
Plastics—Phenolic resins—Determination of hexamethylenetetramine content—Kjeldahl method,perchloric acid method and hydrochloric acid method
HG/T 2755-1996
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Plastics. Phenolic resins. Determination of hexamethylenetetramine content
YS/T 1317-2019
Method for chemical analysis of karstedt catalyst solution-Determination of platinum content-Hydrazine hydrate reduction method
20231371-T-606
Plastics — Phenolic resins — Determination of hexamethylenetetramine content\r Kjeldahl method,perchloric acid method and hydrochloric acid method
GB/T 18932.18-2003
Method for the determination of hydroxymethylfurfural in honey--HPLC-UV detection method
HB 5422.4-1989
KS M ISO 8988-2010(2020)
Plastics-Phenolic resins-Determination of hexamethylenetetramine content-Kjeldahl method, perchloric acid method and hydrochloric acid method
\u0413\u041e\u0421\u0422 \u0420 57024-2016
Fish. Method for determination of the residual content of derivatives benzoylureas using ultra highly liquid chromatography-quadrupole-time-of-flight mass spectrometry
BS EN ISO 8988:2006
Plastics. Phenolic resins. Determination of hexamethylene-tetramine content. Kjeldahl method, perchloric acid method and hydrochloric acid method
UNE-EN ISO 8988:2007
Plastics - Phenolic resins - Determination of hexamethylenetetramine content - Kjeldahl method, perchloric acid method and hydrochloric acid method (ISO 8988:2006)
ISO 8988:2006
Plastics — Phenolic resins — Determination of hexamethylenetetramine content — Kjeldahl method, perchloric acid method and hydrochloric acid method
EN ISO 8988:2006
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Plastics. Phenolic resins. Determination of hexamethylentetramine content