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Re: Mix your own FO?
Sorry folks, that should have been 75ml.
> I find
> that it yields about 1.5 times the amount of ferrous ammonium sulfate
> example: if you use 50 g ferrous, you would expect to yield 100 ml of
> It is also relatively quick. There is no rehydration or mixing from
> because you end up with liquid ferric. On the down side, it may contain
> compounds. They may not be bad or present a problem with making excellent
> prints. I have been doing it this way since early in 1994. B&S hasn't
> dollar for ferric since. I would suggest that you try it. The method
> Jeffrey has posted may be a bit more handling of messy by products than
> to get into. Either way you go, you'll see that making ferric your self
> rewarding and it is much cheaper than buying powder. You will also see
> fix to "bad" ferric is at hand.
> Have fun. If you would like I'll send you a write up on how to make
> Ferrous ammonium sulfate, and oxalic acid, and H2O2 - 35% .
> EJ Neilsen
> Nick Makris wrote:
> > Hello again,
> > I'm about to start another iteration of PT/PD prints and have to order
> > chemicals. The question that arises is whether to mix your own Ferric
> > Oxalate or to buy it premixed such as that from B&S. I know what some
> > person would suggest - Jeffery says mix your own and learn from the
> > experience. What I need to know is what are the trade offs; example,
> > to mix smaller amounts than you can purchase otherwise; or, less
> > or, what. Is it worth the trouble and how much trouble is it, after
> > gotton the process down??????
> > Many thanks for everyone's help - it's a great group.
> > Nick
> Eric J. Neilsen
> 4101 Commerce Street, Suite #9
> Dallas, TX 75226