PMID: 1249027Jan 1, 1976

Collaborative study of a semiautomated method for the determination of crude protein in animal feeds

Journal - Association of Official Analytical Chemists
R J Noel, L G Hambleton

Abstract

A semiautomated method consisting of digestion of animal feeds in a block digestor and determination of ammonia by ammonia-salicylate reaction has been studied collaboratively, along with the official final action Kjeldahl method, sec. 7.016. Each collaborator analyzed 16 feed samples, tryptophan, ammonium dihydrogen phosphate NBS standard, and ammonium sulfate primary standard. Statistical analysis showed that the 2 methods agreed. The semiautomated method has been adopted as official first action.

Related Concepts

Tryptophan
Autoanalysis Procedure
Phosphate Measurement
Salicylates
Blood Ammonia Measurement
Ammonia Inhalants
PMS-Tryptophan
Ammonia
Digestion
Ammonia Measurement

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