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Active standard | Published: 30/12/1992
ISO 10349-7:1992
Photography — Photographic-grade chemicals — Test methods — Part 7: Determination of alkalinity or acidity
(Photographie — Produits chimiques de qualité photographique — Méthodes d´essai — Partie 7: Détermination de l´alcalinité ou de l´acidité)
Available languages: English
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Detail information
Designation: ISO 10349-7:1992
Publication date: 30/12/1992
Pages: 2
Country: International technical standard
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Description / Abstract: The method is based on weighing the test portion, dissolution in carbon-dioxide-free water, adding phenolphthalein indicator, and observing the colour of the test solution: if the test solution turns pink, determination of the alkalinity, if it remains colourless, determination of the acidity.Popular Publishers
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