Ultrafine Chemistry Black and White Odorless Stop Bath Powder (To Make 1 gal)

Use this Ultrafine Chemistry Black and White Odorless Stop Bath between developing and fixing your black and white prints in the darkroom. It is formulated to decrease the amount of contaminants entering the fixer solution post developing and to prevent chemicals from exhausting at a quicker rate.This product comes in powder form and makes up to 1 gallon of working solution.