pH & EC Meters, Calibration & Control

Accurate pH and conductivity measurements help manage nutrient solutions and irrigation water. This collection brings together handheld meters, calibration fluids, storage solutions and pH adjusters.

Choose instruments and calibration products that match the measurement you need. Check probe care, storage and calibration frequency in the manufacturer's instructions.

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  • TrolMaster PCT-3 Inline EC & Temp Sensor | Nutrient Conductivity Probe for Aqua-X & Tent-XTrolMaster PCT-3 Inline EC & Temp Sensor | Nutrient Conductivity Probe for Aqua-X & Tent-X
    TrolMaster PCT-3 Inline EC & Temp Sensor | Nutrient Conductivity Probe for Aqua-X & Tent-X
    TrolMaster

    TrolMaster PCT-3 Inline EC & Temp Sensor | Nutrient Conductivity Probe for Aqua-X & Tent-X

    £209.95
    £209.95

    Maintain surgical precision over your nutrient strength with the TrolMaster PCT-3 Heavy-Duty EC and Temperature Probe. Engineered for high-performance irrigation systems, the PCT-3 provides real-time, dual-parameter...
  • TrolMaster PCT-2 Heavy-Duty In tank EC & Temp Sensor | Commercial Grade Nutrient Probe for Aqua-X & Tent-XTrolMaster PCT-2 Heavy-Duty In tank EC & Temp Sensor | Commercial Grade Nutrient Probe for Aqua-X & Tent-X
    TrolMaster PCT-2 Heavy-Duty In tank EC & Temp Sensor | Commercial Grade Nutrient Probe for Aqua-X & Tent-X
    TrolMaster

    TrolMaster PCT-2 Heavy-Duty In tank EC & Temp Sensor | Commercial Grade Nutrient Probe for Aqua-X & Tent-X

    £196.95
    £196.95

    Maintain absolute control over your nutrient reservoir with the TrolMaster PCT-2, a commercially rated In tank EC and Temperature sensor. Engineered for high-demand cultivation environments, this...
  • TrolMaster PPH-2 Heavy-Duty In tank pH Sensor | Commercial Grade BNC ProbeTrolMaster PPH-2 Heavy-Duty In tank pH Sensor | Commercial Grade BNC Probe
    TrolMaster PPH-2 Heavy-Duty In tank pH Sensor | Commercial Grade BNC Probe
    TrolMaster

    TrolMaster PPH-2 Heavy-Duty In tank pH Sensor | Commercial Grade BNC Probe

    £184.95
    £184.95

    Achieve professional-level water chemistry management with the TrolMaster PPH-2 Heavy-Duty Intank pH Sensor. This commercially rated probe is engineered for continuous, high-accuracy pH monitoring in demanding...
  • TrolMaster AMP-3 Sensor Board | Precision pH, EC & Temp Interface for Aqua-X Pro & Tent-XTrolMaster AMP-3 Sensor Board | Precision pH, EC & Temp Interface for Aqua-X Pro & Tent-X
    TrolMaster AMP-3 Sensor Board | Precision pH, EC & Temp Interface for Aqua-X Pro & Tent-X
    TrolMaster

    TrolMaster AMP-3 Sensor Board | Precision pH, EC & Temp Interface for Aqua-X Pro & Tent-X

    £129.95
    £129.95

    Take control of your reservoir’s vitals with the TrolMaster AMP-3 Sensor Board. Specifically engineered to act as the essential communication bridge between your nutrients and your...
  • Bluelab Digital Soil pH Pen – Professional Direct-To-Root Acidity Tester for Soil & Substrates – High-Accuracy Probe with Integrated Temperature Sensor & Backlit LCDBluelab Digital Soil pH Pen – Professional Direct-To-Root Acidity Tester for Soil & Substrates – High-Accuracy Probe with Integrated Temperature Sensor & Backlit LCD
    Bluelab Digital Soil pH Pen – Professional Direct-To-Root Acidity Tester for Soil & Substrates – High-Accuracy Probe with Integrated Temperature Sensor & Backlit LCD
    Bluelab

    Bluelab Digital Soil pH Pen – Professional Direct-To-Root Acidity Tester for Soil & Substrates – High-Accuracy Probe with Integrated Temperature Sensor & Backlit LCD

    £174.95
    £174.95

    The Bluelab Soil pH Pen is a professional‑grade digital meter engineered to measure pH levels directly in soil, coco, rockwool, and nutrient solutions with exceptional accuracy....

    Display technology: Digital
  • Bluelab Pulse Multimedia EC/MC Meter | Handheld Root Zone Soil Moisture & EC StickBluelab Pulse Multimedia EC/MC Meter | Handheld Root Zone Soil Moisture & EC Stick
    Bluelab Pulse Multimedia EC/MC Meter | Handheld Root Zone Soil Moisture & EC Stick
    Bluelab

    Bluelab Pulse Multimedia EC/MC Meter | Handheld Root Zone Soil Moisture & EC Stick

    £249.95
    £249.95

    The Bluelab Pulse Multimedia EC/MC Meter is a cutting‑edge diagnostic tool designed to give growers fast, accurate, and actionable data from the root zone. Unlike traditional...
  • Bluelab pH Replacement Probe | High-Quality Replacement Electrode for Bluelab MetersBluelab pH Replacement Probe | High-Quality Replacement Electrode for Bluelab Meters
    Bluelab pH Replacement Probe | High-Quality Replacement Electrode for Bluelab Meters
    Bluelab

    Bluelab pH Replacement Probe | High-Quality Replacement Electrode for Bluelab Meters

    £68.99
    £68.99

    The Bluelab Replacement pH Probe is a high‑precision, laboratory‑grade sensor designed to restore the accuracy and performance of your Bluelab pH meters and controllers. Whether your...
  • Bluelab pH Controller | Automatic pH Monitoring & Dosing for HydroponicsBluelab pH Controller | Automatic pH Monitoring & Dosing for Hydroponics
    Bluelab pH Controller | Automatic pH Monitoring & Dosing for Hydroponics
    Bluelab

    Bluelab pH Controller | Automatic pH Monitoring & Dosing for Hydroponics

    £499.50
    £499.50

    The Bluelab pH Controller is a professional‑grade, automated pH management system designed to maintain perfect pH levels in hydroponic reservoirs, nutrient tanks, and recirculating systems. Built...
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