Test apa nitrati-nitriti azot 50 buc

test apa pentru nitrati-nitriti azot 50 buc Timp test 1 min Sensibilitate NO3: 0, 0.5, 2, 5, 10, 20, 50;NO2: 0.15, 0.3, 1, 1.5, 3, 10 ppm (mg/L) Marca Water Works (made in Usa) http://www.wts-online.ro/magazin/test-apa-nitratinitriti-azot-50-buc-p-303.html