Bluelab pH Pen Plus

Product detailed description

Introducing the Bluelab pH Pen Plus – a next-generation solution for growers who demand precision, durability and long-term value. This digital pH tester gives you lightning-fast and reliable results, whether you are measuring the pH of nutrient solution, soil or water. Thanks to the fully replaceable probe, it becomes a smart investment that saves you money in the future.

The correct pH value is crucial for your plants, such as tomatoes, chilli peppers or herbs, to absorb nutrients. With this pen, you can be sure you are providing them with optimal conditions for healthy growth and a bountiful harvest.

Key features and benefits for growers

• Fully replaceable probe (REPHPLUS): You do not need to buy a completely new device. Once the probe reaches the end of its life, simply replace it with a new one and continue measuring. This significantly reduces long-term operating costs.
• Probe with double-junction technology: Ensures a longer service life and more reliable measurements by minimising the risk of contamination and probe clogging. Your results will be more consistent and accurate.
• Fully waterproof and dustproof (IP68): This pH metre is made for demanding growing environments. Accidental immersion in a nutrient tank will not damage it, and it also floats on the surface, so you can easily find it.
• Backlit LCD display: The large and clear display makes it easy to read pH and temperature values in any lighting conditions, even in a dark grow tent.
• Simple two-point calibration with reminder: Calibration at pH 7.0 and 4.0/10.0 is quick and intuitive. The device also alerts you after 30 days when recalibration is needed, so your measurements are always accurate.
• Automatic temperature compensation (ATC): The temperature of the solution affects the accuracy of pH measurements. This tester automatically compensates for temperature differences, guaranteeing you an accurate result at all times regardless of conditions.
• "Hold" function: With one press of a button, you can "hold" the measured value on the display. This is useful when measuring in hard-to-reach places and you need to note down the result calmly.
• Automatic switch-off: For maximum battery saving, the device switches off automatically after 4 minutes of inactivity.
• Special storage cap for the probe: The protective cap contains a sponge soaked in KCI solution, which keeps the sensitive probe constantly hydrated. This means the pen is always ready for immediate and accurate measurement.

Technical parameters

• Measuring range: 0.0 – 14.0 pH, 0 – 50 °C / 32 – 122 °F
• Resolution: 0.1 pH, 1 °C / 1 °F
• Accuracy (at 25 °C): ±0.1 pH, ±1 °C / ±2 °F
• Calibration: Two-point (pH 7.0 and pH 4.0/10.0)
• Operating environment: 0 – 50 °C / 32 – 122 °F
• Power supply: 1 x AAA alkaline battery (included)
• Automatic temperature compensation (ATC): Yes
• Ingress protection: IP68 (dustproof and waterproof)
• Automatic switch-off: After 4 minutes of inactivity

Package contents

• 1x Bluelab pH Pen Plus
• 1x AAA alkaline battery
• Probe care instructions