Bluelab Conductivity Pen - Hydroponic Testing Equipment

Regular price R2,250.00 Save Liquid error (snippets/product-template line 133): Computation results in '-Infinity'%

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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.


    • 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
    • Guarantee: 1 year limited guarantee for Bluelab Conductivity Pen (proof of purchase is required)

It is important to check the EC of the conductivity pen using the Bluelab 2.77EC Conductivity Standard Solution (we do stock this for your convenience) at regular intervals and to clean it so that it is operating optimally. Check out the YouTube video below which explains how simple this is.