I use a SeaTest nitrate test kit that's many years old, and it uses dry
cadmium powder reagent. It seems very accurate, but I haven't seen this
type in the stores recently. Apparently cadmium is a suspected carcinogen.


The Hagen kit I bught last year (sucks) has a cadmium regent too. I'm
amazed you can buy cadmiuin any form; it's beyond dangerous. The car
guys would kill for real cad plating (they send stuff to Mexico for it)

--
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