Bluelab Combo Meter

Three Fundamentals on One Clear Display, Portable 3-in-1

pH, nutrient strength and temperature all affect how well plants take up nutrients, and checking them with separate tools slows the routine. The Combo Meter reads all three through two probes on 2 metre cables, with a backlit display and simple buttons. Use it in nutrient reservoirs, run-off and source water.

It suits home growers who want one dependable meter and commercial teams who carry a portable meter between rooms. The pH probe holder with suction cup keeps the probe secure in a reservoir.

Key Features & Benefits

• Calibration-free conductivity — reads EC, CF, ppm 500 or ppm 700 straight out of the box.
• Replaceable pH probe — standard BNC connection makes a worn probe easy to swap.
• Automatic temperature compensation — accurate readings across solution temperatures.
• 2-point pH calibration — 30-day reminder keeps calibration on schedule.

Who Should Use the Combo Meter

Hydroponic and soil growers who want pH, EC and temperature from one handheld meter, from beginners to commercial operators. It suits anyone checking several reservoirs or water sources.

About Bluelab Combo Meter

The Combo Meter reads pH 0.0–14.0 and EC 0.0–9.9 with ±0.1 accuracy at 25°C / 77°F and runs on 2x AAA batteries. It includes a pH probe holder and calibration sachets, and carries a 5-year limited warranty (6 months on the pH probe).

Frequently Asked Questions

What can the Combo Meter measure?

It measures pH, conductivity and temperature. Conductivity displays as EC, CF, ppm 500 (TDS) or ppm 700, and temperature in °C or °F.

Do both probes need calibration?

Only the pH probe needs calibration, using pH 7.0 and pH 4.0 (or pH 10.0) solutions. The conductivity probe is factory calibrated and ready to use.

Can I measure directly in soil?

The included pH probe is designed for solution. For direct substrate readings, the Combo Meter with Leap pH Probe kit pairs this meter with a spear-tip probe.

How long is the warranty?

The meter has a 5-year limited warranty. The pH probe, a consumable electrochemical sensor, has a 6-month limited warranty.