Homebrew PCBs

On 11/17/2012 5:10 PM, dubob4432 wrote:
>
> since hair dye uses hydrogen peroxide in 10%, 20% and 30% strengths, 
> would this be a better way to go?
>
> reason i ask is because the only freezer i have is a regular 
> freezer/fridge unit and not sure if it would get cool enough?
>
> bob
>
Beauty shop H2O2 is 10  - 20  - 30 VOLUME, not %.  It works out to 6  - 
9  - 12 %

Norm


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