Bluelab Commercial pH Pen Air & Surface Disinfection Interior Diameter: 10″ or 26

Interior Diameter: 10″ or 26 CM

At the same time start the timer and shake the strip in a whipping motion three times to prevent excess liquid pooling on the strip

Measures photosynthetically active radiation (PAR) from 400 to 700 nm

Use at or before the first sign of disease

Bluelab Commercial pH Pen Air & Surface Disinfection Interior Diameter: 10″ or 26Bluelab Commercial pH Pen The Bluelab pH Pen is a hardy, compact, and accurate pH and temperature pen for using in nutrient solution. Use the pH pen to quickly and accurately know if your solution is too acidic or alkaline, or too hot or cold. Designed for everyday use, the Bluelab pH Pen helps you to keep your plants in the optimal pH and temperature range so that your plants can thrive. Getting started is easy. Follow the instructions to hydrate and