For many indoor and outdoor growers, the question of whether to reuse soil after harvest is both economic and envir...
Continue Reading

Description
The lightweight and easily controllable Bluelab pH Pen measuring device with a clear LCD display is designed for pH and temperature measurement. Without a cable and temperature compensation. The ideal temperature for flawless operation of the meter is 18-22 degrees.
The pocket-sized Bluelab pH Pen is waterproof, powered by only 1x AAA battery. The advantages are discreet dimensions and easy portability and use. For calibration, we recommend using only Bluelab calibration solutions.
The low battery will be indicated by a flashing indicator. Note that the probe is not replaceable. The device is covered by a one-year manufacturer's warranty against manufacturing defects.
Bluelab pH pen calibration solutions with pH 4 and 7 are suitable for calibration.
Bluelab pH pen parameters:
- Temperature units: °C, °F
- Range: 0-14 pH, 0-50 °C, 32-122 °F
- Accuracy: 0.1 pH, 1 °C, 1 °F
- Deviation: +/- 0.1 pH
- Automatic temperature compensation: yes
- Battery: 1 x AAA