Bluelab PPM Conductivity Pen Oscillating which suits product sitting in

which suits product sitting in inventory rather than shipping out this week

low maintenance

Without it

and odor from a tent or to move air into a room

Bluelab PPM Conductivity Pen Oscillating which suits product sitting inBluelab PPM (Parts Per Million) Pen Testing Meter for Hydroponics and Solution Measuring Bluelab PPM Pen is the latest innovation for hand held conductivity meters and the ultimate handy solution for measuring conductivity. Hydroponic growing lets you give the best care possible to your plants. The quality of care is in your control. The Bluelab ppm Pen provides a compact, quick and handy way to manage the success of your crops to ensure they have the