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Bluelab Conductivity Pen (EC or ppm)
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Bluelab Conductivity Pen (EC or ppm)

The ultimate handy solution for measuring conductivity (EC or ppm) and temperature!
Temporarily Out of Stock
FREE shipping Worldwide
On all products to any location in the world, minimum purchase $40

The ultimate handy solution for measuring conductivity (EC or ppm) and temperature!

The Bluelab Conductivity Pen simply tells you that your plants have the right amount of nutrient in your solution and lets you know if adjustments are needed. To feed plants well, we need to know what we're feeding them. Start with a quality nutrient.

Measuring the conductivity every day is the best way to avoid over-diluting or over-concentrating your nutrient solution. Completely change the reservoir solution every 7 days. Top up the nutrient level between changes - so your plants always have the right amount of food.

The Bluelab Conductivity Pen also measures the temperature of the solution, as root health is vital to the success of a crop. Temperature affects the growth rate and structure of a plant so a solution temperature of 18 - 22˚C or 65 - 72˚F is recommended.

To make sure the plants can get at the food, you need to measure the pH of the solution. Check out our handy Bluelab pH Pen so you have every tool required to manage your nutrient solution.

Now isn't that Handy!


  • Measures conductivity and temperature
  • Selectable units for conductivity and temperature
  • Backlit LCD display
  • Calibration optional
  • Successful EC or ppm calibration indicator
  • Hold reading function
  • Low battery indicator
  • Fully waterproof
  • Auto off function
  • Automatic temperature compensation
  • 1 x AAA alkaline battery included
1 year guarantee for Bluelab Conductivity Pens
(proof of purchase is required)
Applications-Aquaponics Applications-Floriculture Applications-Greenhouse Applications-Hydroponics
Aquaponics Floriculture Greenhouse Hydroponics
Conductivity (EC & ppm) pen manuals and care

EC pen manuals

US-English-Flag  English                                 German-Flag  Deutsch

Spanish-Flag  Español-España                    French-Flag  Français

Dutch-Flag  Nederlands

ppm pen manuals

US-English-Flag  English                                 Latin-America-Spanish-Flag  Español-Latinoamérica

Canadian-French-Flag  Français-Canada

Probe care: Bluelab Conductivity Probe Cleaning Instructions
Product video
See how to set up the ppm pen before the first use, measure conductivity, clean and test the probe.
Visit our Video Library to view the Bluelab Conductivity (EC) cleaning and calibration video.

Technical specifications and brochures

Bluelab Conductivity (EC) Pen Technical Specifications         Bluelab Conductivity (ppm) Pen Technical Specifications

Bluelab Conductivity (EC) and pH Pen brochure                    Bluelab Conductivity (ppm) and pH Pen brochure

WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov


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