ISO 10349-7:1992 (R2023)
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ISO 10349-7:1992 (R2023)

Photography — Photographic-grade chemicals — Test methods

Summary

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.

Notes

90.93 : Norme internationale confirmée

Technical characteristics

Publisher International Organization for Standardization (ISO)
Publication Date 12/30/1992
Confirmation Date 06/05/2023
Edition 1
Page Count 2
EAN ---
ISBN ---
Weight (in grams) ---
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