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Re: Mix your own FO?
Eric, which one should have been 75ml?? Also, would you mind posting your
procedure for making ferric oxalate?
To avoid any confusion, I am refering to the #1 & #2 solutions used with the
DOP processes and not AFO.
Many thanks,
Nick
Eric wrote
>Sorry folks, that should have been 75ml.
>-----
>
>> I find
>> that it yields about 1.5 times the amount of ferrous ammonium sulfate
>used. For
>> example: if you use 50 g ferrous, you would expect to yield 100 ml of
>ferric
>> oxalate.
>>
>> It is also relatively quick. There is no rehydration or mixing from
>powder,
>> because you end up with liquid ferric. On the down side, it may contain
>unknown
>> 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
>seen a
>> dollar for ferric since. I would suggest that you try it. The method
>that
>> Jeffrey has posted may be a bit more handling of messy by products than
>you want
>> to get into. Either way you go, you'll see that making ferric your self
>can be
>> rewarding and it is much cheaper than buying powder. You will also see
>that a
>> fix to "bad" ferric is at hand.
>>
>> Have fun. If you would like I'll send you a write up on how to make
>ferric with
>> Ferrous ammonium sulfate, and oxalic acid, and H2O2 - 35% .
>>
>> EJ Neilsen