An acidic bath that immediately halts development.
Anhydrous Citric Acid - 1000g
39,86 zł
Net price: 32,41 zł
Anhydrous Citric Acid - 100g
10,12 zł
Net price: 8,23 zł
Anhydrous Citric Acid - 25 000g = 25kg bag
597,90 zł
Net price: 486,10 zł
Anhydrous Citric Acid - 5000g
159,44 zł
Net price: 129,63 zł
Anhydrous Citric Acid - 500g
23,92 zł
Net price: 19,45 zł
Citric Acid Monohydrate - 1000g
35,48 zł
Net price: 28,85 zł
Citric Acid Monohydrate - 100g
8,28 zł
Net price: 6,73 zł
Citric Acid Monohydrate - 5000g
155,45 zł
Net price: 126,38 zł
Citric Acid Monohydrate - 500g
19,93 zł
Net price: 16,20 zł
Sodium Pyrosulfite ( metabisulfite ) metabisulphite Na2S2O5 - 1000g
17,94 zł
Net price: 14,59 zł
Sodium Pyrosulfite ( metabisulfite ) metabisulphite Na2S2O5 - 100g
5,52 zł
Net price: 4,49 zł
Sodium Pyrosulfite ( metabisulfite ) metabisulphite Na2S2O5 - 25 000g = 25kg bag
302,53 zł
Net price: 245,96 zł
Sodium Pyrosulfite ( metabisulfite ) metabisulphite Na2S2O5 - 5000g
71,75 zł
Net price: 58,33 zł
Sodium Pyrosulfite ( metabisulfite ) metabisulphite Na2S2O5 - 500g
11,96 zł
Net price: 9,72 zł
Citric acid anhydrous 99,5% Loba AR Op.500 g
77,14 zł
Net price: 62,72 zł
PureLand citric acid chda 1 hydrate op.100g HDPE bottle
9,31 zł
Net price: 7,57 zł
PureLand citric acid chda 1 hydrate op.1kg HDPE bottle
53,20 zł
Net price: 43,25 zł
PureLand citric acid chda 1 hydrate op.500g HDPE bottle
32,30 zł
Net price: 26,26 zł
Development doesn’t stop on its own — developer left in the emulsion keeps working and can overdevelop highlights. A stop bath (usually weak acetic or citric acid) rapidly neutralizes the alkaline developer, freezing the tonal state at the intended point. This gives more consistent contrast and protects the fixer from being exhausted by carried-over developer. Water can be used as a stop in a pinch, but acid stops are faster and more reliable.