Digital BW, The Print

Thanks, Paul, I'll read the label on the glycerin at my pharmacy and check the purity before I buy it.

Oh, and I meant to say C6b.

Regards,

Paul

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Paul Roark <roark.paul@...> wrote:
>
> <paulmwhiting@...> wrote:
> 
> > **
> >
> >
> > ... I want to mix up Paul Roark's C6c base, which calls for glycerol. My
> > pharmacy only stocks glycerine... is that the same thing?
> >
> Yes, glycerine = glycerol (aka glycerin). See
> http://en.wikipedia.org/wiki/Glycerol
> 
> Note also footnote 8 of http://www.paulroark.com/BW-Info/Ink-Mixing.pdf .
>  I use 99.7% pure.  I'm not sure what purity is needed.  Someone once
> commented that Walmart had glycerin.  I went into one and looked at what
> they had.  It appeared to me that it was simply a cosmetic that was mostly
> glycerin, but it had other things in it to make it smell nice, etc.  I
> suppose nice smelling ink is OK, but I don't know what affect other
> chemicals might have.  So, I'd stay with as high a purity as is practically
> available.  Overall the ink cost is going to be so low as to not be much of
> a factor in printing.
> 
> Also,  unless you are going to print on Arches watercolor paper, there is
> no need to go to the C6c version with the additional surfactant in it.
> 
> Good luck with the mixing.
> 
> Paul
> www.PaulRoark.com
> 
> I
> 
> >
> >
> 
> 
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>