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ISO 10349-7:1992

Photography — Photographic-grade chemicals — Test methods — Part 7: Determination of alkalinity or acidity
30. 12. 1992.

Опште информације

90.93     5. 6. 2023.

ISO

ISO/TC 42

Međunarodni standard

37.040.30  

engleski  

Kupovina

Objavljen

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Apstrakt

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.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 10349-7:1992
90.93 Odluka o potvrđivanju standarda
5. 6. 2023.