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Fixer dissolves and removes unexposed silver halides, making the image permanent and light-stable.
Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 1000g
Availability: Large quantity
Dispatched within: 5 days
Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 100g
Availability: Large quantity
Dispatched within: 5 days
Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 25 000g = 25kg bag
Availability: Large quantity
Dispatched within: 5 days
Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 5000g
Availability: Large quantity
Dispatched within: 5 days
Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 500g
Availability: Large quantity
Dispatched within: 5 days
Sodium Thiosulphate ( Thiosulfate ) - 25 000g = 25kg bag
Availability: Large quantity
Dispatched within: 5 days
After development, a lot of silver halide remains in the emulsion. If left there, it would darken in room light and ruin the photo. Fixers based on thiosulfates (“hypo”: sodium thiosulfate; rapid fix: ammonium thiosulfate) form soluble complexes with silver halides and wash them out. Proper fixing controls archival stability: too little fixation leaves milky, unstable negatives/prints; too much (especially with some papers) can increase washing time. Some fixers include hardeners to toughen emulsions.