Constituent F-5 (tank and replenisher) Water, about 50°C (125°F) 600 mL KODAK Sodium Thiosulfate Anhydrous (Hypo)1 1 A different quantity of Sodium Thiosulfate Pentahydrate (Hypo) can be used in place of KODAK Sodium Thiosulfate Anhydrous (Hypo). The corresponding weight of Sodium Thiosulfate Pentahydrate can be calculated by multiplying by the weight of Sodium Thiosulfate Anhydrous (Hypo) by 1.57. In this formula 153 g of KODAK Sodium Thiosulfate Anhydrous (Hypo) is equivalent to 240 g of KODAK Sodium Thiosulfate Pentahydrate (Hypo). 153.0 g KODAK Sodium Sulfite (Anhydrous) 15.0 g
KODAK 28 Percent Acetic Acid2 2 To make approximately 28 percent acetic acid from glacial acetic acid, add 3 parts of glacial acetic acid to 8 parts of water. 48.0 mL KODAK Boric Acid (Anhydrous Crystals)3 3 Use crystalline boric acid as specified. Powdered boric acid is difficult to dissolve and you should avoid using it. In some cases, the odor of sulfur dioxide given off by KODAK Fixer F-5 may be objectionable. To eliminate this odor, almost completely, omit the boric acid and substitute twice its weight in KODAK Balanced Alkali. This modified solution is KODAK Fixer F-6. It has less hardening action then F-5, but it washes out of the film more easily. 7.5 g KODAK Potassium Alum 15.0 g Water to make 1.00 L pH at 25°C (77.0°F) 4.25 ± 0.25 Specific Gravity at 25°C (77.0°F) 1.134 ± 0.003