Hand held TDS meter options

[Binare]

To each there own. I bought this years ago on Kevin at RCs recommendation to save a few bucks. But I will say, these are quite simple, Its a simple measure of conductivity, that's it. I highly doubt a bottle of distilled water or new filters and media will read 10ppm, in fact if it did, I'd just use that as my baseline instead of 0, its not a ph probe. Just offering something up that costs a lil less is all.