Start with what you need to measure and the water you are testing. Hanna makes instruments and consumables for different applications, so a marine, pool or freshwater test is not automatically interchangeable. Match reagents and standards to the exact instrument code, and check the stated range and units before ordering.
Choose a test for your water
For ponds and freshwater systems, start with the parameter, expected concentration and sample type. Explore ammonia testing, nitrite testing and phosphate and phosphorus testing. A result reported as phosphorus or ammonia nitrogen is not the same numerical value as phosphate or ammonium; compare readings using the method and units stated for that instrument.
Saltwater and disinfected water need their own methods. Browse marine water testing or pool and hot tub testing, and check the exact sample limitations before choosing a meter. A large display range does not automatically describe the usable range of every supplied sensor.
One parameter or several?
A Checker gives a digital reading for its specified test. Portable photometers and multiparameter testing instruments suit different combinations of measurements. Compare the method, accuracy, working range, sample volume and routine supplies, as well as the purchase price. Read each product’s supplied contents: starter reagents, probes, check standards and cases vary by reference.
Match the consumables to the instrument
Order refills, cuvettes and replacement probes by the exact reference, rather than by the parameter name alone. Reagents, certified check standards and calibration solutions do different jobs. Follow the instrument’s specified checking or calibration procedure; a sealed check standard does not give every Checker a user calibration function.
Keep the optical sample surfaces clean and follow the stated electrode care and storage method. See pH and alkalinity products or the full Hanna Instruments range for the matching instrument, reagent and care options. Optional extras are additional items; check their descriptions and quantities alongside the main product.
