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ISO 10349-7:1992

Photography -- Photographic-grade chemicals -- Test methods -- Part 7: Determination of alkalinity or acidity
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ISO 10349-7:1992

Photography -- Photographic-grade chemicals -- Test methods -- Part 7: Determination of alkalinity or acidity

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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.

SDO ISO: International Organization for Standardization
Document Number ISO 10349
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 42/WG 6
Publish Date Document Id Type View
Not Available ISO 10349-7:1992 Revision