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Distilled or Deionised Water? - Page 2

post #11 of 19
Quote:
nd it does cause the water to want to return to an equalibrium by stripping copper from the blocks in the loop, so I add PT-Nuke since its primary ingredient is Copper(II) sulfate pentahydrate (CuSO4·5H2O).
Yeah you have to love the PT Nuke....I haven't seen even a hint of crud growing in my loop since i started using it, and like you said its copper based...Its sure a lot cheaper and easier to use then Lysol, Listerine or iodine tincture and crap like that...
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post #12 of 19
Is it ok to use RO (reverse osmosis - see wikipedia) water? Apparantly it's just another way of "distilling" water....

Cheers,

Roz
post #13 of 19
Distilling is the only way to get distilled water lol.

You shouldn't have issues with deionised so long as you change it every month. I think I'll change my water every month. I'm using straight distilled with no additives.
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post #14 of 19
you should be able to run straight distilled longer if you use a piece of silver in your res to act as a biocide. a coin or a ring would work perfectly.
post #15 of 19
I did some looking and basically found that distilled water is deionized by its nature. The below quote is typical of what is found from knowlegeable science types.

"The main difference between DI water and distilled is that in DI water, as the name suggests, it has had its unwanted ions taken out and replaced with hydoxide and hydrogen as applicable. Distilled water has been boiled and condensed. This not only removes all the rogue ions but it also removes many of the dissolved gases, which DI water doesn't do. Saying that, leaving distilled wate for any time will allow gases to redissolve and you will be back to square one. If you are doing serious analytical work, I would recommend you use distilled wtwer, and preferably triply distilled water (ie distilled three times). It must also be very fresh. If you are doing routine chemistry where absolute purity is not important, use the cheaper DI water.



Trevor Crichton
R&D practical scientist - UK "

Personally, I went to my local medical supply store and bought a couple of liters of USP sterile medical grade water (which is distilled by by the way)
Edited by LeeH - 9/29/08 at 6:45am
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post #16 of 19
You can ask at Boots for some pure water to see what they have, they told me they can order if needed, i didnt have enough time as i just wanted to flush my loop with it so i settled for DI water from a Pound shop.

It is pretty hard to find distilled water in the UK for some reason, supermarkets didnt have it and the only i could find was de-ionized.
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post #17 of 19
people use deionised and i havent heard them complain. hell, some even run plain tap water.
post #18 of 19
I'm at UCB, and my chem lab has distilled water from a separate faucet in the sink. You guys think that's safe to use? (My professor said I could just take whatever I needed in a bottle). Does distilled water get contaminated easily?
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post #19 of 19
Man it is hard to find Distilled here so i just picked up a gallon of De-ionized for like £3.50 and seriously it is perfectly fine..been running in my loop for 2 months now 24/7 and there is no crud growing or anything..just pick it up and call it done...youll have nothing to worry about.
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