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You can't readily buy DI water, but you can buy distilled water. The two are entirely different purity levels.
by airhead969 5y ago
You can't readily buy DI water, but you can buy distilled water. The two are entirely different purity levels.
- xaduha 5y agoReverse osmosis filtered water is mainly what I have in mind, companies sell that. 6-14 PPM is what I measured personally and I think it falls into this category.
- airhead969 5y agoThat's some crappy RO water. My home system takes 45 ppm water and reduces it to <2 ppm (~500 kΩ). For all intents and purposes, it's not conductive on its own. Distilled water is made by steam condensation, and nearly ultra-pure but still contains dissolved gases. DI water should be made from some distilled water to be the highest possible purity, but it's usually made from RO or simply filtered tap water. There are some things DI can do that steam distillation can't, and vice-versa. The two processes are entirely different and NOT interchangeable.
- xaduha 5y agoOk, I modified my original comment. > My home system takes 45 ppm water and reduces it to <2 ppm My tap water is around 227 and filter is just recently installed, there's still some air in the system. I don't think it will go that low ever, but it's good enough for me. I plan to remineralize it a bit for drinking anyway, so it's all a bit moot.
- airhead969 5y agoFilters and RO systems rarely remove dissolved gases. Try making ice from RO water vs. lab DI water.
- xaduha 5y agoI don't need it to remove air from water, I need it to stop mixing air that was in the empty spaces around filters when they were installed into said water. Tap water doesn't have much air in it I don't think, it will sort itself out eventually. Right now I have very small air bubbles that are still visible when filling up a glass, they are created when air and water pass through RO membrane. After you let it sit for a while PPM number drops.