Bluelab Digital pH Pen

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Introducing the Digital pH Pen By Bluelab The Bluelab pH Pen helps monitor the nutrient level in your plant's solution to ensure healthy growth. The pen measures both the pH and te mperature of the solution and has a backlit LCD display for easy reading. It also has a successful pH calibration indicator and is fully waterproof for easy use. The temperature of the solution should be kept between 18-22°C for optimal growth. This handy tool is powered by a single AAA alkaline battery and will automatically turn off after use. Features:- Measures pH and temperature- Selectable units for temperature- Backlit LCD display- Double junction probe (not replaceable)- Successful pH calibration indicator- Hold reading function- Low battery indicator- Fully waterproof- Auto off function- Automatic temperature compensation- 1 x AAA alkaline battery included Show more