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New Hanna nitrate tester


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Nitrate is super hard in a saltwater matrix; the chloride interferes significantly. Not surprising they didn't do it before (from a chemistry perspective), and I'm very skeptical that's going to be able to do any better from an accuracy/precision perspective than nyos or red sea.
I think mostly, the checkers give a false sense of comfort because they are digital, tough they're obviously important when you have trouble distinguishing shades of color (especially if you are color blind)

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I was just looking for these today. I didn’t realize they weren’t around yet. Weird. I’ll definitely be grabbing one. I’m plus/minus such a wide range just trying to read the dang colors. This will at least be close. 

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