From: "Gene Johnson" <genej2@xxxxxxx> Subject: [pure-silver] baking soda as wash aid Date: Thu, 17 Feb 2005 07:40:48 -0800 > I saw on the Summitek site a suggestion for using Baking soda in the print wash water as a wash aid. Any thoughts on this? Economical and low tox if it works well. If you wash your prints in pure, deoinized water, addition of bicarbonate would expedite washing. But I'm not sure if you use tap water containing some. Levenson did this work in 60s. As a conventional wash aid bath (not a washing water additive) bicarbonate is also effective, but probably not as effective as sulfite in many conditions. But sulfite bath has short shelf life unless iron catalysis is poisoned and radical scavenger is added. Bicarbonate may keep longer as a stock solution. After all, I don't see a need to change sulfite wash bath though. -- Ryuji Suzuki "Keep a good head and always carry a light camera." ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.