Codes et normes - Achat
ISO 10349-9:1992
Photography -- Photographic-grade chemicals -- Test methods -- Part 9: Reaction to ammoniacal silver nitrate
SKU: iso_021266_110002
Publié par ISO
Année de publication 1992
1 Edition
2 pages
détails du produit
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.