P110 Pro2 Handheld pH, EC & Temperature Meter – Waterproof & Replaceable Electrode

P110 Pro2 Handheld Meter – Accurate, Tough, and Built for Growers

The P110 Pro2 is your all-in-one handheld meter for pH, EC, and temperature. Whether you’re running a grow room, greenhouse, or hydro system, this meter makes monitoring your nutrient solutions and water sources simple, precise, and reliable.

What’s New in the Pro2?

• AAA Batteries: Runs on standard batteries—no more messing with button cells.
• Easy-Read Display: Sleek black screen with bright white text for visibility, even in low light.
• Decimal Choice: Switch between 1 or 2 decimal places for the precision you need.
• Calibration Reminder: Automatic 30-day prompt to keep your readings accurate.

Smart, Durable Design

• Replaceable Electrode: Swap out the probe when needed instead of replacing the whole meter.
• Waterproof (IP67): Floats if dropped in a tank—built for real grower conditions.
• Ergonomic Grip: Modern design with rubber grip and cap cord for easy handling.
• No Storage Hassle: Electrode doesn’t need to be stored in solution between uses.

Why Growers Love It

• Simple to use with fast, accurate readings
• Tough enough for daily use in demanding grow environments
• Cost-effective long-term with replaceable electrodes

Specifications

• Measurements: pH, EC, temperature
• Display: Black background with white text
• Power: Standard AAA batteries
• Calibration: Reminder every 30 days
• Waterproof Rating: IP67 (floats in water)
• Electrode: Replaceable

Ready to level up your liquid measurements? Grab the P110 Pro2 today and measure with pro-level accuracy and peace of mind.

Make sure to buy the right calibration solution to calibrate per Aqua Master proscribed instructions or save £££ and buy as a complete kit!

Aqua Master P110 Manual 

Purchase Options

1. P110 Pro 2 Only
2. P110 Pro 2 + Aqua Master 4 Pack Solution (Ph4|Ph7|EC|KCL) + 2 x 5ml Pipettes
3. P110 Pro 2+ 250ml Ph Up + 250m Ph Down + 2 x 5ml Pipettes
4. P110 Pro 2 + Aqua Master 4 Pack Solution (Ph4|Ph7|EC|KCL) + 250ml Ph Up + 250m Ph Down + 2 x 5ml Pipettes

The Combo Pen P110 Pro 2 is ideal for measuring the EC, pH and temperature of liquid plant nutrition and water in swimming pools, Jacuzzis and ponds. The user-friendly buttons can be used to effortlessly switch between the parameters. The meter is delivered fully calibrated and includes batteries.

How to use the Aqua Master P110 Pro 2 pH & EC Combo Pen

1. Remove the protective cover
2. Gently clean the electrode with distilled water and dry it off.
3. Press the On/off button to start the meter.
4. Insert the meter upright into the solution up to the edge and stir gently. Wait a few seconds for the correct value to appear on the display.
5. Press the C/F button to switch between Celsius and Fahrenheit.
6. Press the MODE button to switch between pH and EC.
7. Rinse the electrode with water after use and press the On/off button to turn off the meter.

Trouble Shooting the P110 Pro 2 

• lf your meter is not working properly, watch these troubleshooting videos. Always make sure that there are no air bubbles present in the solution during calibration. This could affect the measurements. 
• If the EC value does not decrease to 0, insert the electrode into ethyl alcohol and shake gently for 5 to 10 seconds.
• Make sure the calibration solution is 25 °[ when calibrating the meter. Failure to do so may affect the result of the calibration. Never store the electrode in distilled water.