Bluelab Ph 4.0 Solution 500ml bulb due to the chance of

due to the chance of over fertilizing

Premium mylar reflectivity 97%

A mini thermo hygrometer is also included and can be attached at the other end of the Garden HighPro MediPro to indicate temperature and humidity in the area of the leaf-tops

When the mass reaches this almost black appearance

Bluelab Ph 4.0 Solution 500ml bulb due to the chance ofBluelab Ph 4. 0 Solution 500ml High quality solutions formulated for calibrating pH probes. Bluelab calibration solutions are essential for use with all Bluelab products. Bluelab Solutions are manufactured specifically for Bluelab products and are referenced to high laboratory standards to ensure your Bluelab products last longer and maintain accuracy.