Response to The ambigity of "dilution 1:3"

I agree - it causes confusion. Typically, in photography 1:3 means 1 part of whatever is being diluted and 3 parts of the solvent (i.e., you end up with 4 parts of final solution). Richard Henry suggested using 1+3 etc as a less confusing alternative but old habits die hard, I guess.... Cheers, DJ.

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