The Bluelab pH Pen is a handheld device that allows you to accurately measure the pH level of your nutrient solution or water. It is a compact and portable tool that is widely used by growers for hydroponic systems, aquaponics, and general water testing.

• Reliable & Accurate
• Instant Easy Results
  
• Easy Calibration
• Next Day UK Delivery
• Auto Temperature Compensation
• Waterproof & Durable
• Super Long Battery Life
• For All PH Applications
• From the Experts At Bluelab
• Pay As You Grow With Clearpay

Reliable & Accurate Measurements

The pH Pen uses a replaceable probe and advanced technology to provide precise pH readings. It has a pH range of 0.0 to 14.0, allowing you to monitor both acidic and alkaline solutions.

Easy Calibration

The pH Pen can be easily calibrated with the push of a button. Calibration solutions are available separately and are used to ensure the accuracy of the readings. Regular calibration is recommended to maintain the device's accuracy.

Automatic Temperature Compensation (ATC)

The pH Pen automatically adjusts the pH reading based on the temperature of the solution. This feature ensures accurate measurements, even if the temperature fluctuates.

Backlit LCD Display

The pH Pen features a clear and easy-to-read LCD display with a backlight, making it convenient to use in different lighting conditions.

Waterproof & Durable

The pH Pen is designed to be water-resistant, allowing you to use it in humid or wet environments. It is also durable and built to withstand regular use.

Long Battery Life

The pH Pen operates on replaceable AAA batteries, which provide a long battery life, allowing you to use it for an extended period before needing to replace the batteries.