ČSN ISO 8968-3 (570528)

Milk - Determination of nitrogen content - Part 3: Block - digestion method (Semi-micro rapid rutine method)



STANDARD published on 1.2.2006


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The information about the standard:

Designation standards: ČSN ISO 8968-3
Classification mark: 570528
Catalog number: 74958
Publication date standards: 1.2.2006
SKU: NS-180618
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

The category - similar standards:

Milk and processed milk products

Annotation of standard text ČSN ISO 8968-3 (570528):

Uvedená část normy specifikuje rychlejší semi-mikrometodu s blokovou mineralizací pro rutinní stanovení obsahu dusíku v plnotučném a odtučněném tekutém mléce.

Postup spočívá v mineralizaci zkušebního dílu směsí koncentrované kyseliny sírové, peroxidu vodíku, síranu draselného a katalyzátoru v aparatuře pro blokovou mineralizaci. Pomocí hydroxidu sodného se z mineralizátu uvolní amoniak, který se titruje kyselinou chlorovodíkovou a obsah dusíku se stanoví výpočtem z uvolněného množství amoniaku.

These changes apply to this standard:

ČSN ISO 8968-3:2006/Z1 (570528) Change

Mléko - Stanovení obsahu dusíku - Část 3: Metoda s blokovou mineralizací (Semi-mikro rychlá rutinní metoda).

Change published on 1.9.2007

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