Processing kodak motion picture films, module 3 analytical procedures

Calculation
Silver, g/L =
(N Na 2 S)(mL Na 2 S)(eq wt Ag)(1000) =
(mL sample)(1000)
For samples containing less than 1 g/L silver
(N Na 2 S)(mL Na 2 S)(107.88)(1000)
(300)(1000)
0.360(N Na 2S)(mL Na 2S)
For samples containing 1 to 3 g/L silver
(N Na 2 S)(mL Na 2 S)(107.88)(1000)
(100)(1000)
1.08(N Na 2S)(mL Na 2S)
For samples containing more than 3 g/L silver
(N Na 2S)(mL Na 2S)(107.88)(1000)
(50)(1000)
2.16(N Na 2 S)(mL Na 2 S)
=
=
=
2 Processing KODAK Motion Picture Films, Module 3, Analytical Procedures H24.03