Transform your hobby-level to mid-level growing game with the Bluelab Combo Meter! This innovative 3-in-1 device combines the essential elements of pH, conductivity, and temperature measurement into one compact and reliable tool. With exceptional precision and accuracy, the Bluelab Combo Meter will help you maintain optimal nutrient levels, preventing overfeeding, deficiencies, and root diseases. Its unwavering consistency has earned it the well-deserved reputation as the “Cadillac of meters.” And for professional growers seeking the pinnacle of crop management, the Bluelab Guardian Connect takes your experience to a whole new level.

1x Bluelab Combo Meter

1x pH probe 1x conductivity probe

2x AAA batteries 1x 20ml pH 4.0 calibration solution

1x 20ml pH 7.0 calibration solution

Maximize the full potential of your Bluelab Combo Meter with these simple steps to get started:

1. Insert batteries and connect pH probe
2. Rinse probe with fresh water and place it in the pH 7.0 calibration solution. Press “pH/calibrate” until the display flashes. Calibration is confirmed by the appearance of a “pH7” icon on
3. the display.
4. Repeat step 2 using the pH 4.0 calibration solution
5. To change nutrient and temp units, hold “nutrient/units” or “temp/units” button until flashing. Scroll through available units, select and confirm selection.
6. Remember to replace the storage cap when not in use and store probe with Bluelab pH probe KCI solution – not RO, distilled, or de-ionized water.