The Truncheon is 100% waterproof, reads in EC, CF and PPM, is fully temperature compensated, automatically turns on and off when placed in or removed from the test solution

The Milwaukee CD 600 will allow you to measure from very low to very high conductivity solutions and it will also compensate for the temperature variance automatically.

The Nutradip™ CMS Nutrient Meter
has automatic temperature compensation and measures the TDS ppm/EC in your water.

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*