ISO 2482:1973
$13.00
Chlorure de sodium à usage industriel — Dosage du calcium et du magnésium — Méthodes complexométriques à l’EDTA
| Published By | Publication Date | Number of Pages |
| ISO | 1973-02 | 8 |
The method is applicable to water-soluble salts for contents greater than 0,001 % (m/m). In a special case, the determination of ions in a principal solution prepared in an acid medium is pooible. The principle consists in dissolution of a test portion and separation of insoluble matter. Titration of the filtrate obtained according to ISO 2479 using disodium ethylendiamintetraacetate (EDTA) in the presence of glyoxal-bis-(2-hydroxyanil) (GBHA) and mordant black 11 (Cl 14645) respectively as indicators.
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