Bluelab Conductivity Pen bio soil marine bird fossilized guano

marine bird fossilized guano

and minerals

Perfect as a hands-on family or classroom project

120V power cord included

Bluelab Conductivity Pen bio soil marine bird fossilized guanoMinimum Order Quantity is 3 pieces. The ultimate handy solution for measuring conductivity! The Bluelab Conductivity Pen is the latest innovation for hand held conductivity meters. It provides a compact, quick and handy way to manage the success of your crops. The Bluelab Conductivity Pen simply tells you that your plants have the right amount of nutrient in your solution and lets you know if adjustments are needed. Display options available in C, F,