Aquamaster P50 Pro2 — pH and Temperature Meter

The P50 Pro2 is the updated version of Aquamaster Tools' best-selling pH and temperature penmeter. More readable, more precise and with small improvements that make a real difference in daily grow room use.

The most noticeable upgrade is the black screen with white characters, which significantly improves readability in low-light conditions or under the typical glare of grow room lighting. Added to this is the ability to select between 1 or 2 decimal places of precision depending on what you need at any given moment.

Like the rest of the Pro2 range, it includes a 30-day calibration reminder: once correctly calibrated, the alert disappears and reactivates after a month, so you never work with drifted readings without knowing it.

The electrode is replaceable, which significantly extends the lifespan of the meter. When the electrode wears out, you just replace the tip rather than buying a new device. Aquamaster recommends storing it upright with KCl storage solution in the cap to prolong electrode life.

The design is comfortable for one-handed use: rubber ergonomic grip, lanyard on the cap and buoyancy so it floats if it falls into the reservoir. It runs on 2 AAA batteries (included), replacing the old button cells with a much more accessible format.

Features

▸ 2-in-1 pH and temperature penmeter

▸ Black screen with white characters for improved readability

▸ Selectable precision: 0.1 pH or 0.01 pH

▸ 30-day calibration reminder

▸ Replaceable electrode

▸ Automatic temperature compensation (ATC)

▸ IP67 rated — submersible

▸ Floats in water

▸ Ergonomic design with rubber grip and lanyard

▸ Auto power-off after 8 minutes

▸ Integrated battery indicator

▸ AAA batteries included

Technical specifications

▸ pH range: 0.0 ~ 14.0 pH

▸ Temperature range: 0°C ~ 50°C (32°F ~ 122°F)

▸ pH resolution: 0.1 pH or 0.01 pH (selectable)

▸ Temperature resolution: 0.1°C (0.2°F)

▸ pH accuracy: ±0.1 pH

▸ Temperature accuracy: ±1.0°C

▸ Temperature compensation: 0°C ~ 50°C (32°F ~ 122°F)

▸ Calibration: 2-point, autocal pH 4.0 and 7.0

▸ Water resistance: IP67

▸ Power supply: 2 x AAA 1.5V batteries (included)

▸ Auto power-off: 8 minutes

▸ Dimensions: 230 x 43 x 43 mm

▸ Weight: 132 g