Bluelab Conductivity Pen bio soil Perfect as a hands-on family

Perfect as a hands-on family or classroom project

Adds mechanical strength to stems

depending on the strength of nutrient mixture and purity of the water source used

A truly exceptional ready-to-use coco fiber-based potting soil

Bluelab Conductivity Pen bio soil Perfect as a hands-on familyMinimum 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,