[pure-silver] Re: Mixing your own chemicals was (Hamster was (Glass versus Plastic containers))
- From: Nick Zentena <zentena@xxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 1 Nov 2005 11:17:51 -0500
On Tuesday 01 November 2005 09:48, Justin F. Knotzke wrote:
> From other posts on other threads, my understanding, is the simplest
> to start with is paper developer. Is this so?
No not really. D-23 is two chemicals. TF-2 fixer is three. But you
should mix
what chemicals you want. The added time for something more complicated isn't
going to be that great. You could argue it's safer since a screwed up paper
developer is just going to waste some paper. A screwed up film developer
might cost you some film.
>
> When mixing either from scratch, how much time does it take to mix
> say two litres of each?
>
Depends on the formula and the chemicals.
Off the top of my head.
TF-2 for 1 litre is:
250 grams of hypo [sodium thiosulfate]
15 grams of sodium sulfite.
10 grams of sodium Metaborate
Double that for 2 litres. It takes a little stirring but not a great
deal.
For paper developer I'd make it diluted. That will speed everything up. Less
chemical going into more water.
JD photochem in Montreal can get you almost anything.
http://www.jdphotochem.com/
Nick
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