Re: Lithium palladium vs. normal palladium

[Loris Medici <mail@loris.medici.name>]

Hi Mark,

I use both. 0.15ml (per 10 square inches) with glass rod, 0.2ml with  
the brush (DaVinci brand, pretty good brush for those who can't obtain  
a Richeson - at a fair price). Sometimes I use 0.2ml with the glass  
rod when the RH is too low (since this is a POP process you need a  
fair amount of water in the paper - yes, I can add a little distilled  
water instead but I'm lazy and the cost difference is not important).

Regards,
Loris.

Quoting Ender100@aol.com:

> Loris,
>
> are you rod coating or brush coating?that could be part of the difference.
>
> In a message dated 1/18/07 2:21:23 PM, mail@loris.medici.name writes:
>
>
> > But Witho is double coating with half-strength solutions (or using  
> > two times water - if you like). So the final amnt. of iron  
> > sensitizer and Pd double salt remans the same (therefore should act  
> > the same). I had to increase exposure times back when I was double  
> > coating Classic Cyanotype to get better Dmax - but the solution  
> > wasn't half strength, it was full strength. Probably it was due to  
> > the extra filtering effect caused by more concentrated coating  
> > solution...
> >
> > BTW, 2ml for 12x20 sized print on COT320 is very little by my  
> > standards. I'd use about 2x solution for that size. I use 0.2ml to  
> > 0.15ml per 10 square inches depending on the RH and coating method  
> > (glass rod / brush). See below:
> >
> > 12 x 20 = 240 / 10 = 24 * 0.2 = 4.8ml,
> > 12 x 20 = 240 / 10 = 24 * 0.15 = 3.6ml.
> >
> > See? Even at 0.15ml per 10 square inches, I use about 80% more than Witho!?
> >
> > Regards,
> > Loris.