Products

Hanna Instrument Iron Photometer

Reagent kit for 25 Iron Tests Range: 0.00 to 5.00 mg/L  

Magnesium is the third most abundant ion in seawater, surpassed only by sodium and chloride. Its abundance is critical in the formation of weak ion...

Reagent refill for the HI-783 (UPDATE VERSION with powder and liquid reagent.) Magnesium is the third most abundant ion in seawater, surpassed only...

The HI774 Checker® HC (Handheld Colorimeter) provides a simple, accurate and cost-effective way to measure phosphate in marine systems including co...

NEW BATCH ARRIVED! ALL REAGENTS SOLD AFTER May 25 2026 ARE FINE.  Voluntary Recall Notice We are issuing a voluntary recall for the Hanna HI 774-25...

REAGENTS: HI 764 Reagent kit for 25 Nitrite tests Range: 0 to 200 ppb

Hanna Instrument Phosphorus Ultra Low Range Reagents - HI736 (25 units)

Hanna Instruments Checker Marine Alkalinity Colorimeter Hanna HI755 Marine Alkalinity Checker Specifications: Range: 0 to 250ppm (mg/L) Resolution...

Refill Kit for Hanna Instruments Checker Marine Alkalinity Colorimeter

Refill Kit for Hanna Instruments Calcium Checker

Hanna Instruments Copper REFILL KIT - HI702-25 - pack of 25

The HI731315 are spare glass cuvettes and plastic caps used with the HI7XX Hanna Checkers. The HI731315 includes 2 cuvettes and 2 caps.

Hanna Instruments Low Range Marine NITRATE Checker HC - HI781   The Hanna Marine Low Range Nitrate Checker® bridges the gap b...

Hanna Instruments Checker Marine Calcium Colorimeter Easier to use and more accurate than chemical test kits Colorimetric method Accuracy ±6% of r...

Hanna Marine Coral Care Checker Bundle – Calcium, Alkalinity & Magnesium Take the guesswork out of reef chemistry with this all-in-one digital ...

The HI97115 Marine Multiparameter Photometer is a compact powerhouse for aquariums and marine biology, capable of precisely measuring pH, Alkalinit...

Hanna Instruments Low Range Marine NITRATE Checker HC REFILL HI-781-25   1x PC x100 mL HI781A-0 25x PCS x 0.16g HI781B-0 ...

Hanna Instruments Checker Phosphate Colorimeter Easier to use and more accurate than chemical test kits Adaptation of Standard Method 4500-P E Accu...

Refill Kit for Hanna Instruments PO4 Checker - pack of 25

Testing and monitoring salinity in saltwater aquariums is an ongoing task. The HI981520 is an easy-to-use vertical mount unit that continuously mon...

he HI782 Marine Nitrate High Range Colorimeter is specifically designed to quickly and accurately determine high levels of nitrate for saltwate...

HI782-25 Marine Nitrate High Range Reagents are for use with the HI782 Marine Nitrate High Range Checker HC. They are manufactured in our state...

Designed to bring simplicity to salinity testing during the any process, the HI98319 Marine Salinity Tester measures conductivity (EC) to deter...