Bluelab Conductivity EC Pen: Hydroponic Nutrient Meter and Digital Thermometer

Effortlessly maintain optimum nutrient levels for your plants with the Bluelab Conductivity EC Pen. This handy device quickly and accurately measures the EC or ppm of nutrient solutions, ensuring your plants receive the ideal amount of nutrients at all times. The Conductivity Pen comes with a digital thermometer and a range of practical features designed to make hydroponic gardening easier and more efficient.

Features and Benefits

  • Fully waterproof design: Withstands the rigours of daily use and even floats if it ends up in your reservoir.
  • Selectable measurement units: Customise according to your preferences, measuring PPM, EC, or CF.
  • Flat electrode: Easy to clean and maintain for consistent performance.
  • Hold reading function: Capture measurements with ease for convenient reference.
  • Automatic temperature compensation: Ensures accurate readings in any environment.
  • Auto-off function: Extends battery life to keep your pen operational for longer.
  • Includes 1 x AAA alkaline battery: Get started immediately with everything you need.
  • Built in New Zealand: Designed and constructed by growers, for growers, to withstand daily wear and tear.

How to Use

  1. Begin with a high-quality nutrient solution to guarantee optimal plant growth and health.
  2. Measure the conductivity of your solution every day in order to avoid over-diluting or over-concentrating the nutrients.
  3. Fully replace the reservoir solution every 7 days until you become familiar with the nutrient solution's performance.
  4. Between complete reservoir changes, top up the water level to keep your plants well-fed and hydrated.

Aqua Gardening Suggests These are Best For

The Bluelab Conductivity EC Pen is ideal for hydroponic gardeners of all skill levels who want to ensure their plants receive the perfect amount of nutrients for optimal growth. The pen's various features and precise measurements make it an essential tool for maintaining a healthy and thriving hydroponic garden.


How does the Bluelab Conductivity Pen work in maintaining the nutrient solution for my plants?

The Bluelab Conductivity Pen measures the EC or ppm of your nutrient solution, allowing you to determine if your plants have the right amount of nutrients. By providing quick and accurate readings, you can make adjustments to your nutrient solution as needed, ensuring your plants receive the proper nutrition.

Can the Bluelab Conductivity Pen measure both EC and ppm readings?

Yes, the Bluelab Conductivity Pen is able to provide measurements in EC, ppm, and CF, allowing you to choose the unit you prefer.

How should I clean and maintain the flat electrode of the Bluelab Conductivity Pen?

The flat electrode is designed for easier cleaning and maintenance. Regularly clean the electrode with water and a soft brush or cloth. To maintain optimal performance, it is recommended to also calibrate the pen periodically.

What are some tips for using the Bluelab Conductivity Pen effectively?

Here are some important tips:

1. Start with a quality nutrient.

2. Measure conductivity daily to avoid over-diluting or over-concentrating your nutrient solution.

3. Change the reservoir solution completely every 7 days.

4. Top up the water level between whole water changes to ensure your plants always have the right amount of nutrients.

Why does the Bluelab Conductivity Pen also measure the temperature of the solution?

Solution temperature is crucial to root health, which directly affects the growth rate and structure of a plant. By measuring solution temperature, the Bluelab Conductivity Pen ensures that you maintain the recommended solution temperature of 18 - 22?C or 65 - 72?F for optimal plant growth.

Is the Bluelab Conductivity Pen waterproof?

Yes, the Bluelab Conductivity Pen is fully waterproof and will even float if it lands in your reservoir. This ensures that the pen can withstand the daily challenges of use in a hydroponic environment.

How long does the battery last, and what type of battery does it require?

The Bluelab Conductivity Pen comes with a built-in auto-off function that extends battery life. It uses 1 x AAA alkaline battery, which is included with the pen, allowing you to start using it right away.

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Product Manual

View PDF brochure for Bluelab Conductivity EC Pen - Hydroponic Nutrient Meter and Digital Thermometer

(SKU: 124305)

Fully waterproof, not just water-resistant - will even float when it falls into your reservoir, Customizable measurement units, Flat electrode for easier cleaning and maintenance, Hold reading function to capture every measurement with ease, Automatic temperature compensation for accurate readings anywhere, Auto-off function to extend battery life, Designed and built in New Zealand

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