Bluelab Conductivity Pen Tools This is where Overdrive® comes

This is where Overdrive® comes in

Powder Formula for Easier Mixing and Absorption

we’ve moved beyond standard potassium sources like sulfate of potash

Lignosulfonates to prevent nutrient aggregation and increase effective absorption

Join Thousands of Successful Growers

Bluelab Conductivity Pen Tools This is where Overdrive® comesA robust handheld solution for measuring conductivity and temperature on the go Fully waterproof, not just water resistant Selectable measurement units so you can customise with your preferences Flat electrode for easier cleaning and maintenance Hold reading function to capture every measurement with ease Automatic temperature compensation for accurate readings anywhere Auto off function to extend battery life 1 x AAA alkaline battery included,