s3nsit try baking soda from super market. This turns it into pure baking soda. Bake it on a clean pan for 10 minutes at a low to medium heat till it becomes sandy dry and not powdery and stops emitting gas. and the negative developer is ready. The mix for preparing developer is one teaspoon of negative developer to 300ml water.
返信 17/02/2018ChiefEngineer plain old sodium carbonate (washing soda) can be found almost anywhere and works a treat.
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