Hi Gary , I bought the hanna c203 this august , and I am very happy whit it
..
http://www.koicarp.net/water_treatme...na_meters.html
but it's a bit expencive.

I was quiet happy whit the kusuris testset too, just not the amonia set.


--
Birgitte
http://www.ninaweb.dk/havedam/english.htm