級別/Grade

感光一級/The First Photo Grade

感光二級/The Second Photo Grade

優級品/Super Grade

含量/Main Content

≥99.5%

≥99.5%

≥99.0%

干燥失重/Loss On Drying

≤0.3%

≤0.3%

≤0.5%

氯化物/Chloride

≤0.2%

≤0.2%

≤0.5%         

溴酸鹽/Bromate

≤0.001%

≤0.003%

≤0.005%

碘化物/lodid

≤0.001%

≤0.005%

≤0.005%

硫酸鹽/Sulphate

≤0.005%

≤0.005%

≤0.01%

PH值/PH Value(5%)

6.0-7.5

5.5-7.5

5.5-7.5

砷/As

—

—

≤0.0004%

鉛/Pb

≤0.2ppm

≤4ppm

≤10ppm 

鐵/Fe

≤0.5ppm

≤4ppm

≤5ppm

銅/Cu

≤0.5ppm

≤1.0ppm

≤1ppm

鉍/ Bi

≤0.2ppm

≤0.5ppm

—

透光度/Peroxide Solution Penetrability(250g/i)

93~100(410nm)

85~100(410nm)

—

澄清度/Transparency Test

合格/Qualified

合格/Qualified

—

氮/Ammonia

≤15.0ppm

—

—

色度/Peroxide Solution Chromaticity(250g/i)

≤（15.0Black once）

—

—