PH Testers

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Batteries for pH/TDS pen, 1.4V (pack of 4 batteries)


Stock up on batteries for your pH/TDS pen and never be without. The tiny battery discs hardly take up any room—you can even store them right in your pen case so you're always prepared. 

USD $6.99

Bluelab pH Meter


The Bluelab pH Meter is a simple, reliable pH meter that provides accurate readings and unparalleled ease of use. 

USD $209.99

Bluelab pH Pen


The Bluelab pH Pen is a handy option for hobby and small-scale hydroponic growers. Maintaining proper pH levels is key in raising healthy, fruitful plants, and this pen accurately measures both the pH and temperature in hydroponic systems. 

USD $112.49

Bluelab Soil and Nutrient pH Pen

Bluelab Soil pH Pen measures pH and temperature (°F and °C) to ensure proper nutrient uptake from nutrient solutions and soil!

USD $184.99

Control Wizard 24/7 Nutrient Monitor


The Control Wizard 24/7 Nutrient Monitor is a three-in-one meter measuring the ppm, pH and temperature of nutrient solutions in real time!

USD $199.99

General Hydroponics pH Test Kit


The pH Test Kit is a liquid tester that covers a pH range of 4.0 to 8.5. Includes sampling tube, reagent and color comparison card. Makes testing easy and reliable.

USD $7.49

Hanna Checker pH Tester with Replaceable Electrode


The HI98103 Checker 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 meters used since its introduction in 1991. From gardeners to researchers, the Checker has been helping people with their pH measurement as a meter that is simple to use and operate.

USD $41.99

HANNA Combo Waterproof Tester


The Combo Waterproof Tester takes highly accurate readings of temperature, pH, EC and TDS.  The combination of quality, features and portability makes this tester a great choice.

USD $214.99

HANNA pH-EC-TDS Meter with F.S.T. Technology


The Hanna pH EC TDS Meter with F.S.T. Technology accurately conducts each respective test in one handy unit.

USD $292.99

HM Digital pH HydroTester


The HM Digital pH HydroTester is a reliable pH meter that is ideal for testing applications such as hydroponics and gardening, pools and spas, aquariums and reef tanks, water ionizers, drinking water and more. 

USD $62.99

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