ČSN 757481 (757481)

Water quality - Determination of dissolved molybdate-reactive silica



STANDARD published on 1.3.2011


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The information about the standard:

Designation standards: ČSN 757481
Classification mark: 757481
Catalog number: 87804
Publication date standards: 1.3.2011
SKU: NS-135813
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

The category - similar standards:

Examination of water for chemical substances

Annotation of standard text ČSN 757481 (757481):

Tato norma specifikuje fotometrické stanovení rozpuštěného reaktivního křemíku molybdenanem amonným. Zkouška je použitelná při rozboru povrchové, podzemní a pitné vody a vody pro energetické účely. Bez objemové úpravy vzorku (50 ml) lze stanovit reaktivní křemík (Si) v koncentračním rozsahu asi od 0,25 mg/l do 15 mg/l, v závislosti na optické délce použité kyvety. Při přepočtu na SiO2 vychází rozsah asi od 0,5 mg/l do 30 mg/l

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