Reference number
ISO 10349-7:1992
International Standard
ISO 10349-7:1992
Photography — Photographic-grade chemicals — Test methods — Part 7: Determination of alkalinity or acidity
Edition 1
1992-12
Read sample
ISO 10349-7:1992
21264
Published (Edition 1, 1992)
This publication was last reviewed and confirmed in 2023. Therefore this version remains current.

ISO 10349-7:1992

ISO 10349-7:1992
21264
Language
Format
CHF 42
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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.

General information

  •  : Published
     : 1992-12
    : International Standard confirmed [90.93]
  •  : 1
     : 2
  • ISO/TC 42
    37.040.30 
  • RSS updates

Life cycle

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