The Hanna HI721 Iron Checker gives quick accuate results for the price of a chemical test kit. It uses the phenanthroline method and has an accuracy ±0.04 ppm (mg/L) ±2% of reading and a resolution of 0.01 ppm (mg/L) resolution (250 points).

Water quality can be tested and controlled quickly and accurately with these professional quality meters, but at a fraction of the cost of their more sophisticated sister meters in our photometer range.

The Hanna HI-711 is a real world first - a fully featured photometer at a pocket sized price. With the Hanna Total Chlorine Checker you can check for chlorine at the touch of a button and get instant results.

The HI-713 Hanna Phosphate Checker bridges the gap between simple chemical test kits and professional instrumentation. With 0.01 mg/L (ppm) resolution it provides accurate digital readout of Phosphate levels in water.

The HI 718 Hanna Iodine Checker bridges the gap between simple chemical test kits and professional instrumentation. With a resolution of 0.1 ppm (125 points) and ±5% of reading ±0.1 accuracy it provides a clear digital readout of Iodine.