[pure-silver] Re: De-ionised versus distilled water for XTOL
- From: "Horst Linke" <monochrome@xxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Thu, 5 Jan 2012 14:50:42 +0100 (MET)
Hi Peter,
in the ideal case there's nearly no difference between both, except perhaps a
small remaining amount of Natrium in the de-ionised ( de-ionisation is a
technique of "de-mineralisation". Theoritically 100 percent of all
"ingredients" will be removed, except organics. In practice 99,8 of the salts
and so on are absent after that process.
Metalls are removed by reverse osmosis, used with the process of
de-ionisation/de-mineralisation.
"Real" distilled water is offered in pharmacies here but rather expensive, both
above mentioned should do it for you.
Here sold as "distilled" isn't really distilled, it's de-ionised/de-mineralized
and most times marked as such with a tiny note somewhere.
We have the luck with a perfect quality out of the water-tap. Only on trips I
take a 5-L-can with me, never had any problems.
hth
Horst
----- original message --------
Subject: [pure-silver] De-ionised versus distilled water for XTOL
Sent: Thu, 05 Jan 2012
From: Peter Badcock
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."
thanksPeter
--- original message end ----
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