A Semimicro-Kjeldahl Method for the Determination of Total Nitrogen in Milk

1.A semimicro-Kjeldahl method and apparatus is described.2.Mercuric oxide is recommended as a catalyst with boric acid as the ammonia receiving agent and methyl red-methylene blue as the indicator.3.The semimicro method was found to check very closely with the Official Method.4.The semimicro method...

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Bibliographic Details
Published in:Journal of dairy science 1940-12, Vol.23 (12), p.1177-1185
Main Authors: Menefee, S.G., Overman, O.R.
Format: Article
Language:English
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Summary:1.A semimicro-Kjeldahl method and apparatus is described.2.Mercuric oxide is recommended as a catalyst with boric acid as the ammonia receiving agent and methyl red-methylene blue as the indicator.3.The semimicro method was found to check very closely with the Official Method.4.The semimicro method is useful for determining small amounts of nitrogen, it is time saving, well adapted to routine analysis, and reduces the cost of reagents per determination.
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.S0022-0302(40)92829-6