On Thu, 05 Jan 2006 23:33:14 +0100, Bruno St-Laurent <bsl88k@...> wrote: > > > Stefan about the H2O2 30% , you really mean 30% not volume 30 ???? > > > cause today i found H2O2 volume 30, it's only 9%!!!!! > > > Bruno > i dunno for sure, but i think it is 30% by volume not weight. ST
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Re: [Homebrew_PCBs] Re: CUCL Temperature , etch time ?????
2006-01-06 by Stefan Trethan