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MANUFACTURER
Fixer dissolves and removes unexposed silver halides, making the image permanent and light-stable.
Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 1000g
€7.46
Net price: €6.06
Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 100g
€2.80
Net price: €2.27
Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 25 000g = 25kg bag
€138.85
Net price: €112.89
Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 5000g
€32.62
Net price: €26.52
Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 500g
€4.66
Net price: €3.79
Sodium Thiosulphate ( Thiosulfate ) - 100
€1.51
Net price: €1.23
Sodium Thiosulphate ( Thiosulfate ) - 1000
€7.95
Net price: €6.46
Sodium Thiosulphate ( Thiosulfate ) - 25 000g = 25kg bag
€140.28
Net price: €114.04
Sodium Thiosulphate ( Thiosulfate ) - 500
€6.06
Net price: €4.93
Ammonium Thiosulfate 40%
€7.60
Net price: €6.18
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.