Developers reduce exposed silver halides to metallic silver (or dyes in color), turning the latent image into a visible one.
benzen-1,4-diol Hydroquinone
Lei17.44
Net price: Lei14.19
Borax Sodium tetraborate x 5H2O - 1000g
Lei34.88
Net price: Lei28.36
Borax Sodium tetraborate x 5H2O - 10g
Lei8.56
Net price: Lei6.95
Borax Sodium tetraborate x 5H2O - 25 000g
Lei465.12
Net price: Lei378.14
Borax Sodium tetraborate x 5H2O - 5000g
Lei139.53
Net price: Lei113.44
Borax Sodium tetraborate x 5H2O - 500g
Lei23.26
Net price: Lei18.91
Disodium edetate EDTA * 2Na Complexon III - 1000g
Lei185.40
Net price: Lei150.73
Disodium edetate EDTA * 2Na Complexon III - 100g
Lei32.44
Net price: Lei26.37
Disodium edetate EDTA * 2Na Complexon III - 10g
Lei18.53
Net price: Lei15.07
Disodium edetate EDTA * 2Na Complexon III - 25 000g = 25kg bag
Lei2,209.30
Net price: Lei1,796.19
Disodium edetate EDTA * 2Na Complexon III - 5000g
Lei811.10
Net price: Lei659.43
Disodium edetate EDTA * 2Na Complexon III - 500g
Lei115.87
Net price: Lei94.21
L - Ascorbic Acid ( Reductor ) Vitamin C - 1000g
Lei58.14
Net price: Lei47.27
L - Ascorbic Acid ( Reductor ) Vitamin C - 100g
Lei18.53
Net price: Lei15.07
L - Ascorbic Acid ( Reductor ) Vitamin C - 10g
Lei5.35
Net price: Lei4.35
L - Ascorbic Acid ( Reductor ) Vitamin C - 25 000g = 25kg
Lei1,390.47
Net price: Lei1,130.47
L - Ascorbic Acid ( Reductor ) Vitamin C - 5000g
Lei324.44
Net price: Lei263.78
L - Ascorbic Acid ( Reductor ) Vitamin C - 500g
Lei37.08
Net price: Lei30.15
Phenidone (1-phenyl-3-pyrazolidinone) photographic developer - 1000g
Lei1,019.67
Net price: Lei829.00
Phenidone (1-phenyl-3-pyrazolidinone) photographic developer - 100g
Lei139.05
Net price: Lei113.05
Phenidone (1-phenyl-3-pyrazolidinone) photographic developer 500g - 500g
Lei579.36
Net price: Lei471.02
Potassium Bicarbonate KHCO3 - 1000g
Lei53.29
Net price: Lei43.33
Potassium Bicarbonate KHCO3 - 100g
Lei18.08
Net price: Lei14.70
Potassium Bicarbonate KHCO3 - 25000g
Lei952.09
Net price: Lei774.06
Potassium Bicarbonate KHCO3 - 5000g
Lei231.74
Net price: Lei188.41
A developer is a reducing bath: exposed silver halide crystals are chemically converted into black metallic silver, building the image where light struck. The choice of developing agents (e.g., hydroquinone, metol, phenidone, ascorbate) and the supporting chemicals sets the look: speed, contrast curve, grain, and edge sharpness. Stronger or higher-pH developers act faster and increase contrast; solvent-rich developers smooth grain; staining developers add proportional dye stains that alter tonal rendition. In color processes, developers also drive dye-forming reactions through the couplers in the emulsion.