In just one glance the Guardian Monitor measures all three critical parameters to successful growth; pH, conductivity and temperature.

General Hydroponic's pH Test Kit is an inexpensive and reliable way to test the pH of your fertilizer.

Replacement PH Probe for Milwaukee Meters.
Works with all ph only models

The Milwaukee pH 600 is designed for quick and reliable pH measurements.

These waterproof testers incorporate one of the world's first user-replaceable electrodes to increase the longevity of the instrument.

The Milwaukee SM100 is a high-quality, hand-held meter with remote probe gives all the flexibility desired in a pH meter.

Professional monitor for quick and reliable pH measurements.
Manual 2 points calibration
Visual LED alarm
Works with 12 VDC adapter
Double junction pH electrode with 2m cable (BNC connector)

PH Probe Replacement for the Nutradip Ph or Tri meters

Nutradip™ Tri-Meter
This meter gives you the ability to monitor pH level, Nutrient Levels in PPM or EC, and Nutrient Temperature in Fahrenheit or Celcius*

The Nutradip™ pH Meter
is the reliable way to measure the acidity or alkalinity in your water. It is a continuous monitoring pH meter with automatic temperature compensation.

Economical, pocket-sized meter Waterproof, dust proof housing that floats Easy to use; push-button calibration with auto buffer recognition Includes transparent electrode cover / sample cup Push-button calibration, HOLD function, and error messages Range: 0.0 to 14.0 pH Power: four 1.5 V button cell batteries (included)

Aqua pH probes are high quality glass bulbed KCL dual layer UV STABILISED which come with a huge 3 metre suppressed cable.