Bluelab Combo Meter

25 years ago, we set out to create the industry's most accurate 3-in-1 meter. 100,000 happy customers tell us we succeeded.

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Your 3-in-1 portable handheld solution!

The Bluelab Combo Meter measures pH, conductivity (EC), and temperature in nutrient reservoirs, run-off, and water supply for hydroponics.

What’s more, this meter can be used on the go, giving you fast and accurate readings when and where you need them.


The science behind healthier plants

The fundamental parameters of pH, conductivity (EC), and temperature all play a pivotal role in driving optimal plant health. By regularly measuring these fundamentals, the Bluelab Combo Meter will enable you to optimize your plants’ nutrient uptake.

Ensure the nutrient solution is at the right pH level, electrical conductivity (EC), and temperature for your plants to thrive out of season.

Case Study: Always ahead of pH drift with the Bluelab Combo Meter

The Bluelab Combo Meter is essential at Puro Organics, ensuring healthy flower exports. Max, the Cultivation Manager, conducts daily pH and EC checks, crucial for plant quality.

Before the Bluelab Combo Meter, the team had no visibility into salt accumulation and pH drift, “but now, we’re always ahead of it. We’re always able to see it coming before anything hurts the plants.” -Max Jablonski, Cultivation Manager, Puro Organics 

“The Bluelab Combo Meter makes the process of fertilizing our plants seamless,” says Max. A major benefit of the Bluelab Combo Meter for Max is how quickly pH and conductivity (EC) measurements can be taken across a large growing area. “It's like seeing into the future and stopping a problem before it occurs." 

Using Bluelab technology to measure pH, conductivity (EC), and temperature means Puro can grow healthier, better plants from seed to sale, with fewer work requirements and less fertilizer.


The Puro team uses the Bluelab Combo Meter to: 

  1. Adjust fertilizer levels efficiently.
  2. Monitor salt accumulation and pH balance.
  3. Ensure precise dosing by cross-referencing drain statistics with the automation system.

Growing in hydroponics? The Combo Meter is your growing companion


Measure pH, EC and temperature in one portable meter

  • All-in-one advantage: A convenient and portable way to get conductivity, pH and temperature measurements in solution in a compact all-in-one meter.

  • Backlit display to capture every measurement with ease: Easy-to-read screen and push-button operation, choose your preferred parameter to display.

  • Brilliantly simple design: Portable, with no external power supply required, the Bluelab Combo Meter can be used anytime and anywhere to help manage your plants’ daily nutrient and pH requirements.

Order yours today!


Hassle-free and easy to use!

The Bluelab Combo Meter makes things super easy by measuring all three essential aspects of nutrient uptake at once.

  • The multi-parameter Bluelab Combo Meter has an intuitive design with a simple interface and controls making it accessible to both beginners and experienced growers.

  • Customizable scales allow you to tailor the measurement preferences to your exact needs, whether it's conductivity (EC), TDS, PPM 500, or PPM 700, along with temperature readings in either Celsius or Fahrenheit.

  • Replaceable pH Probe - easy to replace, ensuring continued accuracy without the need to buy another unit. Easy calibration process to follow.
Combo Meter Screenshot 2024-03-26 114655

Download the Bluelab Combo Meter Information Sheet


Watch the Bluelab Combo Meter Overview Video


We also have other meters to suit your growing requirements:


Combo comparison