Hanna Instruments Low Range Phosphate Checker® HC (HI713)

ow Range Phosphate Colorimeter - Checker® HC by Hanna Instruments is a handheld digital colorimeter designed to accurately measure low levels of phosphate in freshwater aquariums, ponds, or environmental water samples. It is a powerful tool that replaces traditional, often unreliable color comparison test kits, providing precise digital readings in parts per million (ppm) of phosphate.

Phosphate is a key parameter in freshwater systems and, when present in high concentrations, can contribute to unwanted algae growth, cloudy water, and overall poor water quality. Even small amounts of phosphate can disrupt the balance of an aquarium, especially in planted tanks or systems that require pristine conditions. Regular monitoring allows aquarists and water quality managers to maintain stable and healthy environments by preventing phosphate buildup.

Using the HI713 Low Range Phosphate Checker® HC is quick and easy. First, fill one of the provided cuvettes with 10 ml of the water sample and insert it into the Checker to calibrate the device. Then, remove the cuvette, add the included reagent, mix thoroughly by gently swirling or inverting, and reinsert the cuvette into the device. Within seconds, the Checker will display the phosphate level digitally, eliminating the guesswork common with color charts.

This device is especially beneficial for those who are managing sensitive ecosystems or who need to maintain phosphate at low levels. It is compact, easy to use, and provides laboratory-quality results at a fraction of the cost of more complex equipment. Unlike liquid test kits, which can be inconsistent and hard to read, this digital meter ensures accuracy and reproducibility in every test.

With Hanna Instruments HI713, hobbyists and professionals alike can detect and address phosphate problems early, leading to better algae control and improved overall water quality. Its simplicity, reliability, and portability make it an essential tool for anyone serious about freshwater aquarium maintenance or environmental water testing.