Adjustable Dosing Relay Flexible dosing control allows configuration of the relay to activate either above or below a user-defined ORP setpoin...

Robust and reliable design features a spherical glass bulb, durable PVDF body, and advanced PTFE junction filled with polymer electrolyte for su...

Control Modes Advanced control flexibility supports on/off, proportional, and PID configurations. This sophisticated programming ensures preci...

Control Modes Versatile control options include on/off, proportional, and PID configurations. This advanced programming capability ensures pre...

HI70456 0.1N Sodium Hydroxide Titrant, 1L Standardized sodium hydroxide solution for precise acid-base titrations: The HI70456 is a reliable 0.1...

HI70422 0.1M Silver Nitrate Titrant, 1L Premium silver nitrate solution for accurate argentometric titrations: The HI70422 is a high-quality 0.1...

Hanna Instruments offers a comprehensive range of pH electrodes engineered for specific applications and sample types. Critical design e...

HI5148B Silver Billet Electrode for Precise Halide Titration Cost-effective alternative to ion-selective electrodes: The HI5148B silver bill...

The Hanna Instruments HI93729-01 & HI93729-03 Fluoride Low Range Reagents are expertly formulated, pre-measured solutions designed for fast and...

Hanna Instruments HI93737U Silver Reagents – 50 & 150 Tests The Hanna Instruments HI93737U Silver Reagents are precision‑formulated solutions ...

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...