The Truncheon is the world's favourite nutrient meter, having proven itself indispensable to hydroponic gardeners everywhere. The Bluelab nutrient Truncheon is incredibly easy to use, all you do is stir your nutrients with it and then place it in the solution and it automatically takes a reading in EC or PPM. The truncheon may seem a bit expensive but you're paying for the bullet-proof reliability that Bluelabs provide, they have such confidence in the quality of their product that they will fix or replace it if it breaks down within 5 years Features