[pure-silver] Re: shamefully off topic
- From: Nick Zentena <zentena@xxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Mon, 21 May 2007 13:00:46 -0400
On Monday 21 May 2007 12:48, Jim Brick wrote:
>
> I hate RA4 chemistry!!!!! Where Ciba P3 chemistry will last, mixed,
> up to a year, RA4 chemistry under the exact same conditions (in my
> JOBO with floating lids) lasts only two weeks. Leave it in the
> machine for more than two weeks and you have a mess on your hands.
> The developer gums up the works. So when I want to print RA4, I have
> to mix chemistry for that session. So I try to mix only the amount
> I'll use. But because of test strips, I usually have to stop and mix
> chemistry mid printing session. So now I mix more than I really need.
> And when I'm finished printing color neg, I have to dump the
> remaining RA4 chemistry and meticulously clean that part of my
> processor. This is why I only very rarely print RA4. So for color, I
> shoot Velvia 50 and print Cibachrome.
I pour my RA4 chemicals back into glass storage bottles. I find if the
developer bottle is topped up it keeps fine. Blix never seems to go bad. So I
make up 2x the amount of blix that I do developer. Some times there is black
crud in the bottom of the bottle. But that's the worst thing I've had to deal
with.
I also do a prewash with the RA4 paper which stops the paper from
sucking up
all the developer. I've told this is bad since it dilutes the developer. But
so far so good. I guess the stop helps protect the blix from the developer
pH.
Nick
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