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Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making

2016-01-06 by Roger Blair

Yes,
Expensive enough to do a needs/cost/benefit reality check! My point was 
that greater than 99% purity was available... As a hobbyist, I would 
start with hardware-store grade materials and test my way up the cost 
ladder to a reasonable result for the application.
Roger

On 1/5/2016 8:01 PM, Jean-Paul Louis louijp@... [Homebrew_PCBs] wrote:
>
> WOW, that\u2019s really expensive! $144.10 per liter + hazardous material 
> fee + shipping.
>
> Jean-Paul
> N1JPL
>
> > On Jan 5, 2016, at 9:18 PM, Roger Blair Roger.Blair@... 
> [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
> >
> > FYI...
> > http://www.sciencelab.com/page/S/PVAR/SLE2248
> >
> > General Chemical Specifications: Assay (C2H5OH; by Volume) Min. 
> 99.5% Water (H2O)0.2%
> > Roger Blair
> >
> > On 1/5/2016 5:43 PM, Jean-Paul Louis louijp@... 
> [Homebrew_PCBs] wrote:
> >>
> >> Pure Ethyl Alcohol (Ethanol) will be the hardest to find in the US. 
> All the pharmacies in the US now carry IPA (Iso Propyl Alcohol) which 
> is not Ethanol. 96% purity limit for current ethanol is not by 
> accident. It is the maximum purity that you can obtain by 
> distillation. In order to get 99%, you need to use a different process 
> that will go beyond the 96% limit. I do not know the english name of 
> the process.
> >> When I was in France, 99% Ethanol was available at any pharmacy and 
> was called \u201cAlcool rectifi�\u201d which translate approximately by 
> rectified alcohol.
> >>
> >> My $0.02,
> >> Jean-Paul
> >> N1JPL / ex-AC9GH
> >>
> >> > On Jan 5, 2016, at 7:02 PM, alienrelics@... [Homebrew_PCBs] 
> <Homebrew_PCBs@yahoogroups.com> wrote:
> >> >
> >> > It says Ethyl Alcohol, which is often denatured. Not everyone 
> uses the same denaturing agents.
> >> >
> >> >
> >> > However, in one of the comments he says:
> >> > "The one I use is Ethyl alcohol (pure 96%) also called Ethanol. 
> It's the one used as antiseptic."
> >> >
> >> > Medical Ethyl alcohol seems to be about 95% or so.
> >> >
> >> > Hardware store denatured alcohol seems to be about 90%.
> >> > https://en.wikipedia.org/wiki/Denatured_alcohol
> >> >
> >> > Some people in the comments mentioned Everclear. It seems to be 
> sold in 75.5% (151 proof) and 95% (190 proof).
> >> >
> >> > Steve Greenfield AE7HD
> >> >
> >> >
> >>
> >>
> >
> >
> >
>
>

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