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ISO 10349-12:1992 Photography -- Photographic-grade chemicals -- Test methods -- Part 12: Determination of density
standard by International Organization for Standardization, 12/01/1992
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Specifies a method of determining the density of solutions used in photographic processing. Measurement is made by a density meter capable of measuring density to 0,001 units, after the test portion has reached thermal equilibrium with a water-bath (at 25 C).