Bluelab OnePen – pH, EC & Temperature Meter with Bluetooth

The Bluelab OnePen is a professional and versatile measurement pen designed for accurate monitoring of the most important nutrient solution parameters. With one compact device, growers can measure pH, electrical conductivity (EC), and temperature, helping plants absorb nutrients efficiently and maintain healthy growth.

The OnePen combines high measurement accuracy with ease of use and smart connectivity. Bluetooth integration with the Edenic app allows real-time monitoring and data storage. The backlit display shows multiple readings simultaneously, while the durable construction and replaceable pH probe ensure long-term reliability.

Complete 3-in-1 Measurement

The OnePen measures pH, EC, and temperature using a single device. This allows growers to quickly verify whether nutrient solutions are properly balanced for plant requirements. Precise pH measurements with a resolution of 0.01 provide maximum control over nutrient uptake and growth performance.

Bluetooth and Data Management

The integrated Bluetooth functionality enables connection with the Edenic app. Measurements can be viewed live, stored, and analysed to help growers identify trends and optimise growing conditions.

Durable and Reliable Design

The OnePen is designed for intensive use in professional growing environments. Titanium EC electrodes provide stable and accurate readings, while the IP68 rating ensures full protection against water and dust. The replaceable pH probe extends the device lifespan.

Easy Calibration and Operation

The OnePen supports simple two-point pH calibration for consistent measurement accuracy. The backlit display and ergonomic design make the device easy to read and comfortable to use, even in humid or low-light grow environments.

Features

• 3-in-1 Measurement Function

  Measures pH, EC, and temperature with one compact professional device.

• Bluetooth Connectivity

  Real-time monitoring and data logging via the Edenic app.

• High Measurement Accuracy

  pH resolution up to 0.01 for optimal nutrient control.

• Durable Construction

  IP68 water and dustproof design with titanium EC electrodes.

• Replaceable pH Probe

  Extends device lifespan and reduces maintenance costs.

• User-Friendly Design

  Backlit display with simultaneous reading visibility.

Specifications

• Measurement parameters: pH, EC, temperature
• Connectivity: Bluetooth with Edenic App and via browser
• pH specifications
  
  • Range: 0.0 to 14.0
  • Resolution: 0.01
  • Accuracy: ±0.05 at 25°C
• EC and mS/cm specifications
  
  • Range: 0 to 10
  • Resolution: 0.01
  • Accuracy: ±0.1
• CF specifications
  
  • Range: 0 to 100
  • Resolution: 0.1
  • Accuracy: ±1
• ppm 500 (TDS) specifications
  
  • Range: 0 to 5000
  • Resolution: 5
  • Accuracy: ±50
• ppm 700 (TDS) specifications
  
  • Range: 0 to 7000
  • Resolution: 7
  • Accuracy: ±70
• °C / °F specifications
  
  • Range: 0 to 50 / 32 to 122
  • Resolution: 0.1
  • Accuracy: ±1
• Temperature units: °C / °F
• Waterproof rating: IP68
• Operating temperature: 0 to 50°C / 32 to 122°F
• Batteries: 2 × AAA
• Electrode material: Titanium
• Electrode: Replaceable
• Included:
  • OnePen
  • Electrode cleaning brush
  • pH 7.0 calibration solution 18 ml
  • pH 4.0 calibration solution 18 ml
  • KCl storage solution 18 ml
• Warranty: 2-year limited warranty for the OnePen and 6 months for the electrode