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Subject: Re: [Homebrew_PCBs] Re: Kepping Your Etchant Good? Multiple Use? Muriatic Acid / H2O2

From: Norm <w6nim@...>
Date: 2012-11-18

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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