Digital BW, The Print

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 



--- In DigitalBlackandWhiteThePrint@yahoogroups.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, 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/>
> > >
> > > 
> > >
> > 
> > 
> > [Non-text portions of this message have been removed]
> >
>