GB/T 21318-2009 Determination of total nirogen content in animal feeding stuffs by combustion according to the Dumas principle and calculation o the crude protein content (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 21318-2009
Scope
This standard specifies the Dumas combustion method for the determination of total nitrogen content in feed ingredients. This standard applies to the determination of total nitrogen content and the calculation of crude protein content in a single feed, and the detection limit of the method is 0.1 mg.
2009GB/T 21318-2009 Determination of total nirogen content in animal feeding stuffs by combustion according to the Dumas principle and calculation o the crude protein content
2007GB/T 21318-2007 Determination of nitroimidazoles residues in foodstuffs of animal orinin