pH Pen + Plus - pH and Temperature Meter - bluelab

Bluelab pH Pen Plus - Professional pH & Temperature Meter Precision pH Monitoring for Serious Growers

The Bluelab pH Pen Plus is the next evolution in portable pH measurement, delivering fast, accurate pH and temperature readings in a compact, waterproof design. Built for growers who demand reliability, the pH Pen Plus features a replaceable probe system, allowing you to extend the life of your meter and minimise downtime when the probe eventually wears out.

Whether you're growing in hydroponics, coco, soil, or aquaponics, maintaining the correct pH is critical for nutrient availability and plant health. The Bluelab pH Pen Plus makes it easy to monitor your nutrient solution and ensure your plants can access everything they need for vigorous growth and maximum yields. Why pH Matters

Even the best nutrients won't perform properly if your pH is outside the optimal range. Incorrect pH can cause nutrient lockout, leading to deficiencies, poor growth, and reduced yields. The Bluelab pH Pen Plus helps you stay in control with accurate, dependable measurements whenever you need them. Key Features

✔ Measures both pH and temperature

✔ Replaceable pH & temperature probe for extended product life

✔ IP68 waterproof and dustproof construction

✔ Double-junction probe technology for reliable readings

✔ Bright backlit display for easy viewing

✔ Simple 2-point calibration process

✔ 30-day calibration reminder

✔ Automatic temperature compensation (ATC)

✔ Hold-reading function

✔ Auto-off function to conserve battery life

✔ Selectable °C and °F temperature units

✔ Integrated lanyard and protective probe cap Specifications

pH Range: 0.0 – 14.0 pH

pH Resolution: 0.1 pH

Accuracy: ±0.1 pH

Temperature Range: 0–50°C (32–122°F)

Temperature Resolution: 1°C / 1°F

Power: 1 x AAA Battery

Waterproof Rating: IP68 What's Included

1 x Bluelab pH Pen Plus

1 x Replaceable pH/Temperature Probe

pH 7.0 Calibration Solution Sachet

pH 4.0 Calibration Solution Sachet

KCl Storage Solution Sachet

Protective Storage Cap Perfect For

Hydroponic systems

Coco growing

Soil cultivation

Aquaponics

Reservoir monitoring

Nutrient mixing

Commercial and hobby growers

When accuracy matters, trust New Zealand's most recognised nutrient monitoring brand. The Bluelab pH Pen Plus gives you professional-grade pH confidence with the added advantage of a replaceable probe, making it one of the smartest long-term investments for any serious grower.