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  • GroLine pH Tester

    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,...

    Our Price: $69.95
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  • Hanna Checker PLUS pH Tester

    HI98100 Checker® Plus pH Tester The HI98100 Checker Plus is the next generation of the original Hanna Checker pH tester. The Checker is the most popular pH meter in the world with over 1 million...

    Our Price: $57.95
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  • 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...

    Our Price: $19.95
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  • Hanna GroLine Combo Meter

    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...

    Our Price: $259.95
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  • 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...

    Our Price: $209.00
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  • 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...

    Our Price: $39.95
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