I cheaped out and bought the inexpensive $20 Hach NO3 test kit instead of the more expensive Hach or LaMotte kits and have been using it for a few months. It tests accurately against a fixed sample and seems to test consistent with what I'm dosing. The tube is kind of cheap with pretty limited color gradation but I like that the colors are built into the tube for ease of comparison. I also like that what I'm adding comes in premixed packets so I don't have to worry about getting the amount wrong. It uses a "cadmium reduction" method whatever that means and only takes 2 minutes to use.
Anyway, Tom do you or anyone else have any experience or feedback with this type of kit? Is this a reasonable alternative to the $50 kits or am I kidding myself here? It certainly seems better than the $5 AP kit I was using which was testing double the NO3 amount when tested against a fixed solution.
If anyone's interested in looking at the kit it's at "hach.com" enter 1403700 as product # under advanced search.
Thanks, Bill
PS
I know, I know, I probably don't need it anyway but it seems to be the one test I like to use as a reference point.
Anyway, Tom do you or anyone else have any experience or feedback with this type of kit? Is this a reasonable alternative to the $50 kits or am I kidding myself here? It certainly seems better than the $5 AP kit I was using which was testing double the NO3 amount when tested against a fixed solution.
If anyone's interested in looking at the kit it's at "hach.com" enter 1403700 as product # under advanced search.
Thanks, Bill
PS
I know, I know, I probably don't need it anyway but it seems to be the one test I like to use as a reference point.