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Standard ČSN ISO 6227 1.4.1997 preview

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ČSN ISO 6227 (650335)

Chemical products for industrial use - General method for determination of chloride ions - Potenciometric method



STANDARD published on 1.4.1997


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The information about the standard:

Designation standards: ČSN ISO 6227
Classification mark: 650335
Catalog number: 21215
Publication date standards: 1.4.1997
SKU: NS-179628
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

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Chemical analysis

Annotation of standard text ČSN ISO 6227 (650335):

Norma obsahuje ISO 6227:1982. Tato mezinárodní norma určuje obecnou potenciometrickou metodu pro stanovení koncentrace chloridových iontů v roztocích, připravených z chemických produktů technické jakosti. Příprava zkoušeného roztoku a některé úpravy obecného postupu by měly být dohodnuty v mezinárodní normě pro chemický produkt, pro který se bude metoda využívat. Podstata metody: "Potenciometrická titrace chloridových iontů (Cl-) odměrným roztokem dusičnanu stříbrného v kyselém prostředí a za přítomnosti acetonu, pomocí stříbrné elektrody nebo chloridové nebo stříbrné iontově selektivní elektrody (indikační elektroda) a kalomelové nebo merkurosulfátové elektrody (srovnávací elektroda). Byly doporučeny i jiné dvojice elektrod (např. stříbro - platina, kalomel), ale zkoušky ukazují, že lepší potencionálové přírůstky jsou získány dvojicemi elektrod výše uvedenými". Postup při provádění normalizované zkoušky je podrobně popsán. ČSN ISO 6227 (65 0335) byla vydána v dubnu 1997

Preview of the standard ČSN ISO 6227 (650335)

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