Bluelab PH Pen


With the compact Bluelab pH pen you can accurately measure the pH value and temperature of a nutrient solution. This way you know exactly if and which adjustments are needed.

To increase the intake of nutrients, plants need a certain pH value. This value indicates the acidity or alkalinity of the water. With the help of the Bluelab pH meter you determine the right value to stimulate the growth of your plants.

In addition to the pH value, the Bluelab pH Pen also measures the temperature of the solution. The temperature is important for the growth rate and the structure of a plant. In most cases a solution temperature of 18-22 ˚C or 65-72 ˚F is ideal.

Simply place the pH probe in the solution and the chosen value will be displayed on the screen. When the probe needs to be replaced it is not necessary to buy a completely new meter. It is also possible to order the probe separately.

TIP! Together with the Bluelab EC Pen / Conductivity Pen you have a robust, convenient and accurate measuring system.


- Bluelab portable pH pen;
- pH & temperature meter;
- Waterproof;
- 0 to 14.0 pH range;
- 1 pH resolution;
- ± 0.1 pH accurate;
- 3 pH calibration points - pH 4, 7 and 10;
- Temperature measurement 1 °C accurate;
- Battery indicator;
- Automatic off function;
- Automatic Temperature Compensation;
- 1 year warranty;
- Includes 1 x AAA battery.