ČSN 757455 (757455)

Water quality - Determination of nitrate - 2,6-Dimethylphenol photometric method - Small-scale tube method



STANDARD published on 1.3.2009


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The information about the standard:

Designation standards: ČSN 757455
Classification mark: 757455
Catalog number: 82920
Publication date standards: 1.3.2009
SKU: NS-135810
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

The category - similar standards:

Examination of water for chemical substances

Annotation of standard text ČSN 757455 (757455):

Tato norma specifikuje absorpční fotometrickou metodu stanovení dusičnanů ve zkumavkách. Zkouška je použitelná k rozboru pitné nebo surové vody. Dále je vhodná jako metoda stanovení dusičnanů (v roztoku po oxidační mineralizaci) při stanovení dusíku v odpadních vodách podle ČSN EN ISO 11905-1. Metodou lze stanovit koncentraci dusičnanů (NO3-) do 50 mg˙l-1 ve zkoušeném objemu vzorku 500 l při použití zkumavek s průměrem 16 mm.

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