ISO 10349-9:1992

Photography — Photographic-grade chemicals — Test methods — Part 9: Reaction to ammoniacal silver nitrate

Publication date: Dec 30, 1992

General information

Current stage: 90.20 Effective date: Jan 15, 2023

Originator: ISO

Owner: ISO/TC 42

Type: International Standard

ICS: 37.040.30

Languages: English

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Status: Published

PDF - EC$120.40

Paper - EC$120.40

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Scope

The method is based on weighing a test portion, dissolving it in water, transfer of the solution to each of two Nessler colour-comparison cylinders, preparing a test solution by adding freshly prepared ammoniacal silver nitrate solution to one of the Nessler cylinders and mixing well, preparing a blank solution by adding ammonium hydroxide solution and water to the other Nessler cylinder and mixing well, allowing the solutions to stand for 2 min, and comparing the colour and turbidity of the two solutions.

Life cycle

NOW

PUBLISHED
ISO 10349-9:1992
90.20 Standard under periodical review
Jan 15, 2023

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