Aqua Master P110 Pro2 Combo Pen - pH, EC & Temperature Meter

One Dip, Three Readings with the Aqua Master P110 Pro2 Combo Pen

Why carry two pens when one does the lot? The Aqua Master P110 Pro2 is a waterproof combo pen that reads pH, EC and temperature from a single electrode, accurate to ±0.1 pH. It floats, runs on two AAA batteries and uses a dry-storage electrode, so there's no storage liquid to forget about.

Why You Need It

EC tells you how strong your feed is. pH tells you whether the roots can actually take it up. Get one right and the other wrong and you're still feeding blind, which is why you need both readings every time you mix.

Most pH electrodes need keeping wet in storage solution, and that's where most of them die. The P110 Pro2's electrode is stored dry, so the biggest cause of a dead pen simply doesn't apply.

Is the P110 Pro2 Right for Your Setup?

• Hand watering or hydro: one pen for every mix, from watering can to reservoir.
• Forgetful with maintenance? Dry storage means you rinse it, cap it and walk away.
• Only need pH? The P50 Pro2 pH Meter does that job for less.
• Want to replace pH and EC sensors separately? The H600 Pro Handheld Meter uses individual plug-in probes.

How the P110 Pro2 Works

One combined electrode carries a pH sensor, an EC sensor and a temperature sensor. ATC (automatic temperature compensation) corrects both readings from 0 to 50°C, so cold and warm tanks read true. pH calibrates itself at two points, and EC calibrates manually with any EC solution.

Key Benefits

• Three readings in one: pH, EC and temperature from a single dip.
• Dry-storage electrode: no storage solution needed between uses.
• Self-calibrating pH: recognises pH 7.00 and 4.01 buffer and sets itself.
• IP67 waterproof: it floats, so it won't sulk at the bottom of the tank.
• 30-day reminder: the CAL tick disappears when it's due.
• AAA batteries: two standard AAAs, included, with a low battery warning.
• Replaceable electrode: one combined electrode swaps out when it wears.

Contains

• 1 x P110 Pro2 combo pen with protective cap and cap cord
• 2 x 1.5V AAA batteries and user manual

Not included: pH 4, pH 7 and EC 1.413 calibration solutions.

P110 Pro2 Specifications

pH range	0.1 to 14.0 pH
pH accuracy	±0.1 pH
EC range	0.0 to 19.99 mS/cm
EC accuracy	±2% of full scale
Resolution	0.1 or 0.01 (pH and EC)
Temperature	0 to 50°C, ±0.5°C
Calibration	pH automatic 2-point (7.00 and 4.01), EC manual
Waterproof rating	IP67, floats
Power	2 x 1.5V AAA, included
Weight	132g
Warranty	1 year meter, 6 months electrode

How To Use the P110 Pro2

1. Soak it: before first use, stand the electrode in tap water for at least 12 hours.
2. Calibrate pH: dip in pH 7.00 buffer, wait for a steady reading and hold CAL. Rinse and repeat with pH 4.01.
3. Calibrate EC: dip in EC calibration solution and set the display to match, following the manual.
4. Mix: set your EC first, then adjust pH, because nutrients move pH.
5. Store dry: rinse the electrode and refit the cap. No liquid needed.

Top tip: Pour calibration solution into a clean cup and calibrate from that, never straight in the bottle. One dirty dip and every reading after it is off.

FAQs

Does the P110 Pro2 need storage solution?
No. It has a dry-storage electrode, so rinse it, cap it and it's ready for next time.

There's white crust on the electrode. Is it faulty?
No. Dried salts on a new pH electrode are normal, and the 12-hour soak dissolves them.

What's the difference between the P110 Pro and P110 Pro2?
The Pro2 adds AAA batteries, a white-on-black display, selectable 0.01 resolution and the 30-day reminder.

Need help choosing? Call our growing experts on 01782 749955 or visit One Stop Grow Shop Stoke at Fenton Trade Park.

Two readings, one pen, no storage faff. Browse our full range of pH and EC meters.