Hanna Cleaning Solution 500ml

Proper maintenance is the key to ensuring the accuracy of any pH tester. Hanna Electrode Cleaning Solution, used at least once per week and as often as once per day, keeps dirt and contaminants from...

Hanna GroLine Calibration Solution 20mL packet

HI50036P is a quick calibration solution for use with Hanna’s GroLine pH and/or EC/TDS meters. Using the Quick Cal function found in compatible meters allows for  a single point...

Hanna GroLine Calibration Solution pH and EC Meters (230 ml)

HI5036-023 is a quick calibration solution for use with Hanna’s GroLine pH and/or EC/TDS meters. Using the Quick Cal function found in compatible meters allows for a single point calibration...

Hanna GroLine Combo Meter

The HI9814 is a slim, lightweight, and waterproof portable meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature with a single amplified probe. The meter operation...

Hanna GroLine EC/TDS Pen

The HI98318 is our latest pocket meter for measuring the EC/TDS of a hydroponic nutrient solution. This modern looking meter is only 0.7" thick and extremely ergonomic, fitting comfortably in your...

Hanna GroLine PH Checker Tester

The HI98115 is a GroLine pH tester with advanced features for the measurement of pH in hydroponic nutrient solutions. The HI98115 is a very simple meter to operate with all functions including...

Hanna GroLine pH Tester

The GroLine HI98118 pH/temperature tester is our latest pocket meter for measuring the pH of a hydroponic nutrient solution. This modern looking meter is only 0.7" thick and extremely ergonomic,...

Hanna GroLine pH/EC/TDS Combo Pen

Designed to bring simplicity to nutrient testing, the HI9814 Portable GroLine Meter is designed specifically for Hydroponic growers. The specialized electrode combines 3 sensors in a single rugged...

Hanna GrowLine Direct Soil EC/Temp Tester

The HI98331 Soil Test™ is a pocket tester specifically designed to directly measure soil conductivity (EC) and temperature. With a compact size, single button operation, and automatic...

Hanna Primo Digital TDS Meter

Hanna Instruments Primo TDS Meter Customers who want to ensure the purity of the water produced by their RO water filtration system will enjoy the ease-of-use afforded them by the Primo TDS Tester...