• Allows a simultaneous semi-quantitative determination of silver and pH value in photographic solutions
• Gradation (pH): 4 - 5 - 6 - 7 - 8
• Gradation (Silver): 0 - 0.5 - 1 - 2 - 3 - 5 - 7 - 10 g/L Ag+
• Color change (pH): yellow to blue
• Color change (Silver): ochreous to brown
