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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  • Dutchpro pH Down Grow | pH Reducer for Veg Stage
    Dutch Pro

    Dutchpro pH Down Grow | pH Reducer for Veg Stage

    £9.50
    £9.50
    £9.50 l

    Product Description: Dutchpro pH Down Grow is a high-purity, specialized acidic solution designed to lower your water's pH levels specifically during the vegetative phase. Standard universal...

    Size: 1L
  • Bluelab PH & EC Care KitBluelab PH & EC Care Kit
    Bluelab PH & EC Care Kit
    Bluelab

    Bluelab PH & EC Care Kit

    £22.95
    £22.95

    PH & EC CARE KIT by BLUELAB  Care, hydration and calibration – in one kitMaintaining your Bluelab pH and conductivity probesTo ensure ongoing accuracy and longevity, we...
  • Bluelab KCL Storage Solution (100ml) – Official Hydration Fluid for pH Meter Probes and PensBluelab KCL Storage Solution (100ml) – Official Hydration Fluid for pH Meter Probes and Pens
    Bluelab KCL Storage Solution (100ml) – Official Hydration Fluid for pH Meter Probes and Pens
    Bluelab

    Bluelab KCL Storage Solution (100ml) – Official Hydration Fluid for pH Meter Probes and Pens

    £13.95
    £13.95
    £139.50 l

    Bluelab KCL Storage Solution: Preserving Precision for Your pH Meter Keep your diagnostic tools in peak condition with the official Bluelab KCL Storage Solution. Your pH...
  • Spider Farmer GGS 3-in-1 Soil Sensor Pro 3-Pack | Moisture & pHSpider Farmer GGS 3-in-1 Soil Sensor Pro 3-Pack | Moisture & pH
    Spider Farmer GGS 3-in-1 Soil Sensor Pro 3-Pack | Moisture & pH
    Spider Farmer

    Spider Farmer GGS 3-in-1 Soil Sensor Pro 3-Pack | Moisture & pH

    £89.99
    £89.99

    Spider Farmer 3 Pcs GGS Smart 3-in-1 Soil Sensor Pro Take the guesswork out of indoor cultivating with the Spider Farmer 3 Pcs GGS Smart 3-in-1...
  • Digital pH meter with three pH calibration sachets on a white backgroundhydroponics digital pH meter with two plants, one healthy and one with yellow leaves, on a wooden surface.
    Digital pH meter with three pH calibration sachets on a white backgroundhydroponics digital pH meter with two plants, one healthy and one with yellow leaves, on a wooden surface.
    Spider Farmer

    Spider Farmer SF‑PH‑Meter | 5‑in‑1 pH Tester

    £44.99
    £44.99

    Maximize your harvest and eliminate the guesswork from your grow with the Spider Farmer 5-in-1 pH & Hydroponic Meter Kit. Engineered specifically for precision hydroponics, indoor...
  • TrolMaster PPH-3 Heavy-Duty Inline Nutrient pH Sensor | 3/4" Threaded BNC ProbeTrolMaster PPH-3 Heavy-Duty Inline Nutrient pH Sensor | 3/4" Threaded BNC Probe
    TrolMaster PPH-3 Heavy-Duty Inline Nutrient pH Sensor | 3/4" Threaded BNC Probe
    TrolMaster

    TrolMaster PPH-3 Heavy-Duty Inline Nutrient pH Sensor | 3/4" Threaded BNC Probe

    £199.95
    £199.95

    Elevate your irrigation precision with the TrolMaster PPH-3 Heavy-Duty Inline Nutrient pH Sensor. This next-generation probe is engineered for professional cultivators who require stable, real-time pH...
  • TrolMaster PCT-1 Reservoir EC & Temp Sensor | Precision Nutrient Monitoring for Aqua-X, Tent-X & Green-XTrolMaster PCT-1 Reservoir EC & Temp Sensor | Precision Nutrient Monitoring for Aqua-X, Tent-X & Green-X
    TrolMaster PCT-1 Reservoir EC & Temp Sensor | Precision Nutrient Monitoring for Aqua-X, Tent-X & Green-X
    TrolMaster

    TrolMaster PCT-1 Reservoir EC & Temp Sensor | Precision Nutrient Monitoring for Aqua-X, Tent-X & Green-X

    £103.95
    £103.95

    Unlock professional-level nutrient management with the TrolMaster PCT-1 Reservoir EC & Temp Sensor. This high-precision probe is designed for growers who demand consistent, real-time data on...
  • TrolMaster PPH-1 Reservoir pH Sensor | Precision Water Monitoring for Aqua-X, Tent-X & Green-XTrolMaster PPH-1 Reservoir pH Sensor | Precision Water Monitoring for Aqua-X, Tent-X & Green-X
    TrolMaster PPH-1 Reservoir pH Sensor | Precision Water Monitoring for Aqua-X, Tent-X & Green-X
    TrolMaster

    TrolMaster PPH-1 Reservoir pH Sensor | Precision Water Monitoring for Aqua-X, Tent-X & Green-X

    £96.95
    £96.95

    Achieve perfect nutrient balance with the TrolMaster PPH-1 Reservoir pH Sensor, a professional-grade probe designed for continuous, high-accuracy water testing. Whether you are managing a high-tech...
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