SIST ISO 937:1995

Oznaka standarda: SIST ISO 937:1995
Koda projekta: 005356
Organizacija: SIST
Naslov (angleški): Meat and meat products -- Determination of nitrogen content (Reference method)
Naslov (slovenski): Meso in mesni proizvodi - Določanje vsebnosti dušika (referenčna metoda)
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SIST ISO 937:1995 angleški jezik Active SIST-B: 38.72 EUR
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Tehnični odbor: KŽP - Kmetijski pridelki in živilski proizvodi
ICS: 67.120.10
Status: Objavljen
Objavljen: 01-Aug-1995
Refer. št. objave: Sporocila 1995-08-01
Referenčna oznaka: ISO 937:1978
Področje projekta (angleško): The method consists in digesting of a test portion with concentrated sulphuric acid, using copper(II) sulphate as a catalyst, to convert organic nitrogen to ammonia ions. Then alkalisation, distillation of the liberated ammonia into an excess of boric acid solution, titration with hydrochloric acid to determine the ammonia bound by the boric acid, and calculation of nitrogen content of the sample from the amount of ammonia produced.

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