Nitrate is reduced to nitrite in the presence of cadmium. The nitrite thus produced reacts with the reagent to yield an orange compound. The amount of color developed is proportional to the concentration of nitrate present in the aqueous sample.
Colorimetric
Chemical test kit for the determination of nitrate in water in the range 0-50mg / l (ppm). Package size: 100 Tests
Chemical test kits
The HANNA test kit for ozone determines the ozone concentration in water via checker disc. The reaction between ozone and the reagent causes a pink tint in the sample which is proportional to the ozone concentration.
All Product
Chemical test kit for the determination of pH in the range 4-10pH. Package size: 300 tests
Chemical test kit for the determination of phosphate in the range 0:00 to 1:00 mg / / 0.0-5.0 mg / L / 0-50 mg / L (ppm).
Test kit for the chemical determination of silicate in the range 0-1 mg / l (ppm). 100 Tests
Test kit for the chemical determination of silicate in the range 0-40mg / l / 0 800 mg / l (ppm). 100 Tests
HI7039L - EC 5000 µS/cm@25°C - 500ml
HI701 Checker HC ® - Free Chlorine
HI983302N EC Indicator up to 9.99 mS with Electrode GRO'CHEK
ซัลไฟด์สารต้านอนุมูลอิสระบัฟเฟอร์
BL983317-1 EC Mini Controller upto 10.00 mS/cm, 230V
HI70038P - 6.44 g/l (ppt) TDS@25°C - 25x20ml
HI11310 Digital pH-Electrode, Glass, refillable (edge)
HI38058 CTK pH