Are you sure that it makes it more acidic? AFAIK it only outputs pure H20, shoul... | Hacker News

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		bernawil 5 months ago \| parent \| context \| favorite \| on: I'm Wirecutter's water-quality expert. I don't fil... Are you sure that it makes it more acidic? AFAIK it only outputs pure H20, should be neutral. If you feed it alkaline water you'll get "more acidic" water, but the other way if you feed it acidic water.

tguvot 5 months ago [–]

yes. it removes calcium and magnesium and it makes water more acidic. also i think it starts absorbing CO2 making it even more acidic.

RO doesn't output pure water. if you want pure water you slap DI filter after RO membrane.

bernawil 5 months ago | [–]

you're right, a little oversight from me.

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