Does this product have any value?

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It would be useful in telling when your RO/DI filters need to be switched out. Drsfosterandsmith have one that also tests pH.
 
lol! i was gonna buy todays woot but it was sold out by the time I saw it

cheap 2-for tuesdays always go quick =( like roka said I was gonna use it to check my ro/di water
 
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