Hanna Instruments Red Hi758 Marine Calcium Checker Test Kit - Saltwater Aquariums

Hanna Instruments

Easier to use and more accurate than chemical test kits, less expensive than professional testing Accuracy +/-6 % of reading at 25 degree C / 77 degree F Large LCD screen for readability Auto shut-off to extend battery life Operated by a single AAA battery, Weight: 1.0 Pounds, Manufacturer: Hanna Instruments