[alt-photo] Decreasing volumes of H2O2

Joao Ribeiro jr at joaoribeiro.com
Wed Jun 2 16:02:34 GMT 2010


Hi Folks,

I'd like to start again mordançage.
The formula I had (and lost)  asked for some 200 vol. H2O2.
The formulas I found today ask for 40 volumes H2O2.
How do I conver the volumes? From 200 and 135 to 40?
Thanks in advance,
Joao

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