The newest member to Hanna instruments Combo series of combination waterproof testers with advanced functions is HI 98121, designed for simultaneous pH and ORP measurements. HI 98121 also reads temperature, which is continuously ...
When HANNA instruments introduced its first version of the pHep (pH electronic paper) in 1986, it immediately revolutionized the standard in pH measurement. pHep`s ease-of-use in combination with its affordability made it possible...
The Hanna Checker Kit includes 4 of the most commonly used Hanna Checkers used in the Marine Aquarium.
Phosphate Checker - includes reagent for 6 tests
Calcium Checker - includes reagent for 15 tests