[pure-silver] Re: De-ionised versus distilled water for XTOL
- From: Jim Brick <jim@xxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Thu, 5 Jan 2012 11:03:59 -0800
I've been using this for mixing chemistry, in my darkroom, for decades. Never
had a problem. The resin last for ~100 gallons and refills are $50 (used to be
$30). It's color coded so you know when the resin needs changing.
http://www.coleparmer.com/Category/Deionizer_with_Clear_Housing/7216
http://www.coleparmer.com/Product/Resin_nuclear_grade_with_color_indicator/EW-01503-30
Jim
Jim Brick
Sunnyvale, CA
http://www.photomojo.org
On Jan 5, 2012, at 4:13 AM, Peter Badcock wrote:
> Hi folks,
>
> When I mix up my XTOL, I would like to start using water with less metals in
> it (such as iron and copper) to give it the longest possible life.
> Apparently sudden death is caused by the Fenton reaction which is catalysed
> by the presence of those metals. Aside from not using up the 5L XTOL within
> 6 months (I would need to develop at least 1 roll per week (@1+2 dil'n) to
> use it all up in that time), and with Kodak on the verge of chapter 11
> bankruptcy, I need to make what I have last.
>
> De-ionised water is cheaper and more readily available. So does the
> de-ionising process remove metals such as iron and copper from the water ? I
> can understand how distilling would remove the metal, but I'm unsure if the
> resins used to de-ionise will remove metals (dissolved or not).
> Up until now I have been using water filtered through a dual cartridge
> undersink filter with "one granular activated carbon cartridge and one carbon
> block cartridge."
>
> thanks
> Peter
>
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