Digital BW, The Print

Joost,

Note that I have used 50% and 100% (accident) Photoflo 600 in the C6 base,
both seemed to work and I didn't have problems with either.

Mike

2010/1/25 pr_roark <paul.roark@...>

>
>
> Joost,
>
> If there is not enough glycol in the mix, the base will cloud. The Photo
> Flo is not in the mix just for the surfactant. The glycol is an active part
> of the base. So, whereas the PF 600 has 3 times the surfactant per unit, if
> you cut back the formula that much you might end up with a cloudy mix. If
> you use the same amount of PF 600, you have a lot of that particular
> surfactant in there. It may not matter, of course. I just have not tested
> it.
>
> Paul
> www.PaulRoark.com <http://www.paulroark.com/>
>
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com<DigitalBlackandWhiteThePrint%40yahoogroups.com>,
> "horstenj" <j.h.j.h@...> wrote:
> >
> > Just this afternoon I ordered some Photoflo 600, the only version I can
> find here in the Netherlands (already difficult enough....).
> >
> > But Paul I don't fully understand your remark. The amount of surfactant
> is higher, so I can understands Mike's reasoning. However, In relation to
> the glycol you state: "So, you'd end up having to use more of the 600 to get
> that". So should I use more Photoflo 600 to get the glycol in order or less
> to get amount of sufractant right?
> >
> > Joost
> >
> >
> >
> >
> > --- In DigitalBlackandWhiteThePrint@yahoogroups.com<DigitalBlackandWhiteThePrint%40yahoogroups.com>,
> Michael King <drmrking@> wrote:
> > >
> > > Just to add to Paul's comment on Photoflo - the standard version in EU
> is
> > > Photoflo 600.
> > > As far as I am aware you can't get Photoflo 200 in EU off the shelf.
> > >
> > > I used Photoflo 600 with Paul's C6 base and I added 50% of the amount
> in
> > > Paul's formula.
> > > Worked fine with HP and Eboni inks in R1900.
> > >
> > > Mike
> > >
> > > 2010/1/25 pr_roark <paul.roark@>
> > >
> > > >
> > > >
> > > > >... Is it the right version of Tergitol though?
> > > >
> > > > Tergitol 15-S-7 is what I found worked. See
> > > > http://www.dow.com/surfactants/products/second.htm for the listing
> of the
> > > > Tergitol family of surfactants.
> > > >
> > > > (Some internet sources suggested the S-5 variation; it was terrible.)
> > > >
> > > > > Have you tried/considered to get the Edwal LFN ...
> > > >
> > > > Edwal Scientific is in Chicago and might be able to point to other
> sources.
> > > >
> > > > Be sure to use Photo Flo 200, not 600. The 600 has a higher
> concentration
> > > > of surfactant per volume and a rather toxic form of glycol. The mix
> needs
> > > > the amount of glycol in the PF 200. So, you'd end up having to use
> more of
> > > > the 600 to get that.
> > > >
> > > > Paul
> > > > www.PaulRoark.com <http://www.paulroark.com/> <
> http://www.paulroark.com/>
>
> > > >
> > > >
> > > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
>
>  
>


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