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ISO 10349-7:1992

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

Standard Details

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.

General Information

Status : Published
Standard Type: Main
Document No: ISO 10349-7:1992
Document Year: 1992
Pages: 2
Edition: 1

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ISO 10349-7:1992
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