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Developer question for PE and others

Photo Engineer

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My quote is incorrect above due to my poor rememberance of German. The exact information was on two pages and I had to combine the two.

Basically, they used Ersatz Borax or acid to adjust pH in solutions and the ersatz Borax was made from Sodium Carbonate and Bicarbonate or with Sodium Bicarbonate and Sodium Hydroxide. The acid used depended on the solution being adjusted.

I looked up my notes again today to see if I could clarify this and use English which is a bit better than my German.

PE