Hanna GroLine 1.41 mS/cm EC Calibration Solution 230ml

HI7031-023 is a GroLine 1,413 µS/cm conductivity standard that is prepared against a NIST traceable potassium chloride solution and supplied with a certificate of analysis. Hanna conductivity...

Hanna GroLine Cleaning Solution 230ml

HI7061-023 is the Hanna GroLine general purpose cleaning solution that can be used for a variety of applications. Electrodes can become dirty from use and will produce inaccurate results even as...

Hanna GroLine pH 4.01 Solution 230ml

Hanna GroLine pH 4.01 Solution 230ml: HI7004-023 is a high quality pH 4.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have...

Hanna GroLine pH 7.01 Solution 230ml

Hanna GroLine pH 7.01 Solution 230ml HI7007-023 is a high quality pH 7.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the...

Hanna GroLine Storage Solution 230ml

Hanna GroLine Storage Solution 230ml for GroLine products 

Hanna GroLine pH/EC/TDS Combo Pen

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...

Hanna GroLine PH Checker Tester

The Hanna GroLine PH Checker Tester HI98115 features advanced features for the measurement of pH in hydroponic nutrient solutions.   The HI98115 is a very simple meter to operate with...

Hanna GrowLine Direct Soil EC/Temp Tester

The Hanna GrowLine Direct Soil EC/Temp Tester HI98331 Soil Test™ is a pocket tester specifically designed to directly measure soil conductivity (EC) and temperature.  With a...

Hanna GroLine EC/TDS Pen

The Hanna GroLine EC/TDS Pen HI98318 is a pocket meter for measuring the EC/TDS of a hydroponic nutrient solution.   This modern looking meter is only 0.7" thick and extremely...

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 pH Tester

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

Hanna GroLine Combo Meter

Hanna GroLine HI981 Combo Meter is a slim, lightweight, and waterproof portable meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature with a single...

Hanna GroLine QuickCal 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 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 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...