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Hanna Instruments GroLine products are designed with the hydroponics grower in mind.

Introduction xviii new products

HI98131 GroLine pH/EC/TDS Combo Tester The HI98131 GroLine Combo offers high accuracy pH, EC (conductivity), TDS (total dissolved solids), and temperature measurements in a rugged, waterproof casing that floats. The GroLine Combo features a replaceable pH electrode with extendable cloth junction as well as an EC/TDS graphite electrode. The renewable cloth junction provides an extended electrode life and the replaceable pH cartridge means that this tester does not need to be thrown away when the pH sensor

HI98118 GroLine pH Tester The GroLine HI98118 pH/temperature tester is our latest pocket meter for measuring the pH of a hydroponic nutrient solution. The HI98118 has a very large easy to read LCD display that shows both pH and temperature along with calibration, stability, and low battery indicators. All operations are simplified to two buttons.

HI98318 GroLine EC/TDS Tester

The GroLine waterproof EC/TDS and temperature tester is ideal for hydroponics, greenhouses, or anywhere you need quick and accurate conductivity measurements.

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