Features at‑a‑glance: Made for hydroponic, aquaponic, and greenhouse growers needing reliable nutrient solution testing Specially designed for m...

The Hanna Instruments HI782‑25 Marine Nitrate High Range Checker® Reagents are the official replacement packets for the HI782 Checker HC. Manufact...

Nitrate is the final step in the nitrogen cycle, and excessive levels in saltwater aquariums can fuel algae and dinoflagellate growth. The Hanna I...

The Hanna Instruments HI83900‑25 is a replacement activator and cleaning solution designed for use with the HI83900 Suction Lysimeter. This 500 mL...

The Hanna Instruments HI77400P Calibration Buffer Sachets provide premium pH 4.01 and 7.01 solutions for precise two‑point calibration of pH meter...

The Hanna Instruments HI753‑25 Chloride Checker® HC Reagents are precision‑formulated replacement containers designed for fast, accurate chloride ...

The Hanna Instruments HI93728‑01 Nitrate Reagents are pre‑measured, high‑purity chemicals designed for fast and accurate colorimetric determinatio...

The Hanna Instruments HI753 Chloride Colorimeter – Checker® HC delivers fast, accurate digital chloride testing for water quality applications. Co...

The Hanna Instruments HI98318U GroLine Waterproof EC/TDS Tester is purpose‑built for hydroponics, giving growers a reliable way to measure fertili...

Three Tube Lengths The HI83900 is available in 30 cm, 60 cm, and 90 cm versions. These options allow agronomists, horticulturists, and researc...

Features at-a-glance Waterproof Protection – Rated IP68, the HI7698194 probe is built for continuous submersion in water, making it ideal for fiel...

PEI Sensor Body Built for rugged environments, the HI7698194-0 features a PEI (polyetherimide) body that resists chemical exposure and physical im...

The Hanna Instruments HI713 Low Range Phosphate Colorimeter – Checker® HC is designed to make phosphate testing simple, accurate, and affordable f...

The Hanna Instruments HI717 High Range Phosphate Colorimeter – Checker® HC delivers lab-grade accuracy in a compact, pocket-friendly meter. Phosph...

The HI83314 benchtop photometer is designed ...

Precise Anionic Surfactant Testing The HI97769 photometer delivers accurate results for anionic surfactant levels, supporting environmental...

Reliable Chlorine Testing The HI97761 photometer provides laboratory-grade accuracy for total chlorine measurement, supporting water qualit...

Accurate Chloride Testing The HI97753 photometer delivers precise chloride measurements, making it ideal for water quality monitoring in en...

Accurate Potassium Testing The HI97750 photometer ensures precise potassium measurement in water, supporting reliable water quality monitor...

Accurate Copper Measurement The HI97747 photometer is designed for precise copper testing at low concentrations. Its portable, waterproof b...

Accurate Low-Range Iron Measurement The HI97746 photometer provides laboratory-quality accuracy for iron determination in the field. With i...

Reliable Nickel Measurement in the Field The HI97740 photometer is engineered for accurate low-range nickel testing. Ideal for environmenta...

Accurate Chlorine Dioxide Testing in the Field The HI97738 photometer is designed for precise low-range chlorine dioxide testing, providing...

Accurate Fluoride Testing The HI97739 photometer delivers dependable fluoride measurement for water quality applications. Built for both fi...