pH Meters

pH — the acid content of a solution — affects a plant’s ability to absorb nutrients. Make sure your nutrient solution is at the proper pH level for maximum growth with these professional-quality, easy to-read pH meters. Our selection assures you’ll find one to meet your growing needs… and budget.

Pssst… Looking for Soil Test Kits? We’ve got `em!

  • Bluelab Combo Meter 1

    Bluelab Combo Meter

    Better crops start with the Bluelab Combo Meter, it's all you need for simple and reliable crop management and it's ...

    $277.50
    learn more or ADD to CART
  • Bluelab Guardian Monitor 1

    Bluelab Guardian Monitor

    In just one glance Blulab's Guardian Monitor measures all three critical parameters for healthy plant growth; pH, conductivity and temperature. Seasonal ...

    $354.95
    learn more or ADD to CART
  • Bluelab pH Replacement Electrod 1

    Bluelab pH Replacement Electrod

    pH probes (electrodes) do NOT last forever and will eventually fail. The Bluelab ph Replacement Electrode is designed for use ...

    $65.50
    learn more or ADD to CART
  • Champ pH Tester (HI 98106) 1

    Champ pH Tester (HI 98106)

    A simple, inexpensive solution to accurate pH measurements! The Champ pH Tester with ±0.2 accuracy features a rugged and ergonomically ...

    $56.95
    learn more or ADD to CART
  • Gro'Chek Combo (HI 991404) 1

    Gro’Chek Combo (HI 991404)

    The Gro'Chek Combo (HI 991404) from HANNA Instruments continuously monitors the three most crucial nutrient parameters in hydroponic, greenhouse and ...

    $183.50
    learn more or ADD to CART
  • Gro'Chek pH Meter (HI 981401N) 1

    Gro’Chek pH Meter (HI 981401N)

    Housed in a water-resistant case, the Gro'Chek pH Meter by HANNA Instruments was originally designed for the greenhouse and hydroponics ...

    $104.50
    learn more or ADD to CART
  • Gro'Chek pH Stick Tester (HI 981408) 1

    Gro’Chek pH Stick Tester (HI 981408)

    The HANNA Gro'Chek pH Stick Tester is fitted with an extra long and very sturdy pH electrode. The instrument itself ...

    $102.50
    learn more or ADD to CART
  • Gro'Chek pH/TDS Meter (HI 981404N) 1

    Gro’Chek pH/TDS Meter (HI 981404N)

    Compact and easy to install. HANNA Instruments Gro'Chek pH/TDS Meter is ideal for agricultural, horticultural and hydroponics applications where pH ...

    $183.50
    learn more or ADD to CART
  • HANNA Combo Tester (HI 98129) 1

    HANNA Combo Tester (HI 98129)

    Fast, efficient, accurate and portable! HANNA Instruments Combo Tester offers highly accurate pH, EC/ TDS and temperature measurements in one ...

    $178.95
    learn more or ADD to CART
  • HANNA pH Tester (HI 98127) 1

    HANNA pH Tester (HI 98127)

    HANNA Instruments pHep4 pH Tester (HI 98127) has a dual-level LCD that displays both pH and temperature (C° or F°). ...

    $102.50
    learn more or ADD to CART
  • HANNA Portable Meter (HI9813-6N) 1

    HANNA Portable Meter (HI9813-6N)

    Ideal for fertilizer solutions! The NEW HANNA Instruments Portable Meter (HI9813-6N) is specifically designed for agricultural applications such as hydroponics, ...

    $249.50
    learn more or ADD to CART
  • pH Test Indicator 1

    pH Test Indicator

    General Hydroponics pH Test Indicator makes testing samples easy. Simply fill a test-tube halfway with nutrient, add a few drops ...

    $6.95
    learn more or ADD to CART