I used to use acetic acid for mixing it but now I am using citric acid. The formulas I have found on the internet often pointed to a %5 solution of citric acid, but I started using %10 because CA is a weak acid.
I am using %12 SN solution too. To coat an area of 8x10 inches I would measure 1,5ml of SN and add 1,5 ml of %5 citric acid and mix it (3ml in total that is a too much to coat IMO).
But I am rather going to do it like this for 8x10 inch, 1,5ml of SN plus mixed with 0,5ml %20 citric acid. The final solution would be less diluted with water and easier to coat IMO. Acidity would be the quite similar, slightly stronger.
Hey thanks for the tip! I'm going to give it a try. I'm still new to salt printing and still have to get my process perfected.
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