GB/T 44290-2024
Calculation method of biogenic carbon content in wood and wood-based products
GB/T 5511-2008
Cereals and pulses—Determination of the nitrogen content and calculation of the crude protein content—Kjeldahl method
UNE-EN 14346:2007
Characterization of waste - Calculation of dry matter by determination of dry residue or water content
BS 04/30116805 DC
BS EN 14346. Characterisation of waste. Calculation of dry matter by determination of dry residue and wet content
32017R1409
DL 422.2-1991
GB/T 15057.3-1994
Limestone for chemical industry--Determination of insoluble matter content of hydrochloric acid--Gravimetric method
GB/T 20365-2006
Determination method for chondroitin sulfate and glucosamine hydrochloride - Liquid chromatography method
GB/T 33317-2016
Plastics—Phenolic resins—Determination of hexamethylenetetramine content—Kjeldahl method,perchloric acid method and hydrochloric acid method
USP f100522
Quinine Hydrochloride
DL 422.3-1991
DB33/T 308-2001
GB/T 11409.9-2003
Test method of insoluble matter in hydrochloric acid for rubber antiagers and vulcanizing accelerators
DL 422.4-1991
YS/T 1658.6-2023
HB 5220.33-2008
Methods for chemical analysis of superalloys-Part 33:Determination of niobium content by tetraphenyl arsonium chloride hydrochloride gravimetric method
GB/T 14454.16-1993
Aromatics—Determination of carbonyl value and carbonyl compounds content—Hydroxylammonium chloride method
DB31/T 247-2000
GB/T 11409.9-1989
Test method of insoluble matter in hydrochloric acid for rubber antiager and vuclcanizing accelerators
DB53/T 842-2017