ISO 10349-9:1992 PDF
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Photography — Photographic-grade chemicals — Test methods — Part 9: Reaction to ammoniacal silver nitrate
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.
| Edition | 1992 |
|---|---|
| Standard Part No | 9 |
| Published Date | 1992 |
| Published By | International Standardization Organisation |
| Page Count | 2 |
