Codes & Standards - Purchase
ISO 10349-7:1992
Photography -- Photographic-grade chemicals -- Test methods -- Part 7: Determination of alkalinity or acidity
SKU: iso_021264_110000
Published by ISO
Publication Year 1992
1 Edition
2 pages
Product 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.