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ISO 10349-6:1992
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Photography -- Photographic-grade chemicals -- Test methods -- Part 6: Determination of halide content

This standard has been reviewed* and then confirmed in 2013.

*ISO standards are reviewed every five years.

Abstract

The method is based on weighing the test portion, dissolution in water, transfer of a 20 ml aliquot in a beaker, pipetting halide standard A or B into a second beaker, adding nitric acid solution plus silver nitrate solution to each beaker, dilution with water, transfer of the treated solutions into separate Nessler colour-comparison cylinders, and observing the turbidity of the two solutions.

 

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