My Cart


Bluelab Guardian Monitor (Temp/pH/EC stationary meter)


Free Local Delivery on Orders over $300.

Packaging includes; Guardian monitor, pH probe, pH probe holder suction cup, conductivity / temperature probe, 5V DC power supply, pH 4.0 and pH 7.0 single use calibration solutions, 4 x fasteners, 2 x cable ties, Nth Am, NZ/Aust, Euro and UK plug adaptors, instructions and guarantees. 2 Year Manufacturer’s Guarantee (6 months for pH probe)


  • Measures 0.0– 14.0 pH, 0– 5.0 EC, 0– 50 CF, 0–2500 TDS, 0–3500 ppm,

   0-50 °C , 32-122 °F

  • Large easy to read displays
  • ‘Plant Safe’ green LED display
  • Selectable units for conductivity and temperature
  • Simple push button pH calibration
  • No calibration required for conductivity or temperature
  • Visual alarm for both high and low settings
  • Settings retained when power lost (non volatile memory)
  • Automatic Temperature Compensation
  • International power supply
  • Adjustable display brightness
  • Water resistant design

Hello You!

Join our mailing list