From: Judy Seigel (jseigel@panix.com)
Date: 05/30/01-07:11:52 PM Z
> > This may be a bit off list so please contact me directly. I have been
> > using Formulary 130 paper (updated version of Ansco 130) with great
> results
> > on gelatin/silver prints. It is a Metol, Hydroquinone, Glycin developer.
> > One batch produced uniform beige stains on my prints. I haven't had the
> > problem before or since but I do remember that the stock solution mixed up
> > rather dark indicating (in retrospect) that much of the Glycin had
> oxidized.
> > Our water has a high Calcium Carbonate content due to being from coral
> > springs.
> > Does anyone know of something that will remove the stain without
> > damaging the prints? The prints have been selenium toned. Please advise.
> > CHEERS!
> > BOB KISS
Bob, there's a "stain removing" bleach & redeveloper, in fact 2 of them,
that have handled everything I've ever thrown at them, and with all the
toning I did, I've had some mighty stains.
Have you got either potassium permangante (for SR#1) or potassium
dichromate (for S-R#2)? You can probably get the k permanganate at the
drugstore -- used for athlete's foot soaks, but the dichromate is simpler
so I'll start with that:
SR#2
Dissolve 13 g potass bichromate in 600 ml water. Add 30 ml hydrochloric
acid (muriatic acid).
Bleach print. Rinse in several changes of water, then rinse in sodium
sulfite sol. (about 1/4 tsp/cup). Rinse several times more. Redevelop in
developer of your choice.
Full instructions for stain removing also in the famous World Journal of
Post-Factory Photography, Issue #3, page 28, along with dozens of other
formulas for toners, bleaches, intensifiers, etc. (Not to mention make yr
own gold chloride, as has caused so much excitement.)
I'll add however that I have used 10-year old glycin that was quite dark
brown & saw no staining. Are you certain it's the glycin?
Judy
.................................................................
| Judy Seigel, Editor >
| World Journal of Post-Factory Photography > "HOW-TO and WHY"
| info@post-factory.org >
| <http://rmp.opusis.com/postfactory/postfactory.html>
............................................................................
This archive was generated by hypermail 2b30 : 07/12/01-11:29:40 AM Z CST