Sodium Bisulfate Stop

Sodium Bisulfate Stop

  1. DeBone 75
    I make my stop out of 26 grams of Sodium Bisulfate in 2 gals. of water. That comes out to about 3/4 full of a 35mm canister. Works very well for paper and film. Lasts a long time. As an indicator for exhaustion I put in 20 drops of Phenol Red....
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