[pure-silver] Re: Rodinal
- From: Gerald Koch <gerald.koch@xxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Mon, 28 Feb 2011 10:46:02 -0800 (PST)
Do NOT refrigerate the developer. It is a highly concentrated solution and
some
of the dissolved chemicals may come out of solution. Once they crystallize out
they can be very hard to get back in solution. Rodinal has a very long shelf
life and there is no advantage with refrigeration.
If you use sodium hydroxide the developer will be a bit softer working than if
potassium hydroxide is used. I htink the Anchell book mentions this.
Jerry
________________________________
From: richard lahrson <gtripspud@xxxxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Sent: Sun, February 27, 2011 3:48:25 PM
Subject: [pure-silver] Rodinal
Hi,
I just mixed up a liter of Rodinal type developer from Photograper's
Formulary (Paraminophenol Fil Developer) which has
been dropped from their catalog. The kit uses Potassium
Hydroxide and requires some care in keeping the temperature
under 60 F when adding the water to dilute, it becomes hot.
Probably why it was dropped.
The mixing went smooth but I miss picking a bottle of Rodinal
off the shelf. Anchell's Film Developer Cookbook uses Sodium
Hydroxide instead, so I'll use that next time.
I put it in two pint bottles. Is there any advantage in refrigerating
one of them? Rodinal keeps rather well, and I used distilled, boiled
water.
Rich
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