Water - 16 fl. oz. - 500mL - 20 fl. oz.
Hydrogen Peroxide (3% soln., commercial grade) - 4 fl. oz. - 125mL - 5 fl. oz.
Ammonia - 3 1/4 fl. oz. - 100.0mL - 4 1/16 fl. oz.
Water to make - 32 U.S. fl. oz. - 1L - 40 Imp. fl. oz.

Wash the prints for about 30 minutes at 65 to 70 deg. F (18-20 deg. C). Use running water with enough replenishment to allow one complete water volume replacement per five minute interval.

Immerse prints in HE-1 for 6 min. at 70 deg. F (21 deg. C)

Wash ten more minutes in running water, then dry.

Solution lifespan: about 50 4x5" (101.6 x 127mm)'s or equivalent per U.S. Quart, 47 per L, 60 per Imp. Qt.

Measurement is precise with U.S. Customary measure and metric measure. Imperial measure accuarate to within 1/16 Imp. fl oz. (based on the proportion of 1.25 Imp. fl. oz. / U.S. fl. oz.)