Get precise pH and temperature measurements with just one device—the Bluelab pH Pen. Renowned for its high-quality testing equipment, Bluelab is a leader in the industry, known for its reliability and accuracy.

This handheld device is not only user-friendly but also offers quick and accurate pH readings on a backlit LCD screen that's easy to read, even in low light. With this pen, you can easily achieve the optimal pH range for most plants, which is between 5.5 and 6.5. This precision allows for maximum nutrient absorption, reducing the risk of nutrient deficiencies significantly.

In addition to pH, the Bluelab pH Pen also measures the temperature of your nutrient solution, helping you prevent root diseases and enhance growth by ensuring your nutrients are at the ideal temperature for uptake.

The pen comes with a 12-month warranty and includes a AAA alkaline battery, ready to use right out of the box, all at an affordable price.

Features of the Bluelab pH Pen:

Measures both pH and temperature with options to display temperature in units of your choice.
Durable, double-junction probe (note: this probe is not replaceable).
Easy-to-read display with backlight.
Indicators for successful pH calibration.
Function to hold the reading on the screen.
Long battery life and a warning when the battery is low.
Waterproof and automatic shut-off to conserve battery.
Automatic temperature compensation for accurate readings in varying temperatures.