[pure-silver] Re: Alkali Fix - How to Mix
- From: Richard Knoppow <dickburk@xxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Mon, 27 Aug 2007 05:37:11 -0700 (GMT-07:00)
-----Original Message-----
>From: "Justin F. Knotzke" <jknotzke@xxxxxxxxxx>
>Sent: Aug 27, 2007 4:55 AM
>To: pure-silver@xxxxxxxxxxxxx
>Subject: [pure-silver] Re: Alkali Fix - How to Mix
>
>On Mon, Aug 27, 2007 at 07:44:19AM -0400, Nick Zentena wrote:
>
>> Best to check with them but that sounds like a dilution. Odds are you
>> make a
>> stock solution up then dilute it 1+4. OTOH best to check their info. Tech
>> sheet?
>>
>> Powdered alkaline fix? Normal or rapid?
>
> It's this stuff: http://www.monochromephotography.com/fixer.htm
>
> How do I make stock solution ?
>
> J
>
>--
>Justin F. Knotzke
>jknotzke@xxxxxxxxxx
>http://www.shampoo.ca
You can weigh the powder to get some idea of the amount its intended to
make. The amount of Ammonium Thiosulfate will be around 150 grams per liter of
_working solution_, so for a stock to be diluted one part stock to 4 parts
water it would be about 750 grams. Actually, it will weigh more because it has
some Sulfite and some alkali in it but not a lot more.
BTW, many of the statements made on the web site about alkaline fixer are
pure drivel.
Another BTW, virtually all Ammonium Thiosulfate (rapid) fixers, neutral or
acid, come as a liquid concentrate because powdered Ammonium Thiosulfate is
quite unstable.
Good neutral pH rapid fixers are put up for use in color processing. I
don't know what is available now but Agfa's was cheap.
--
Richard Knoppow
dickburk@xxxxxxxxxxxxx
Los Angeles, CA, USA
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