Bluelab pH Pen

Precise, portable & robust – ideal for hydro, soil, coco & RDWC systems

The Bluelab pH Pen is a handy meter for determining the pH and temperature of your nutrient solution. Featuring automatic temperature compensation, a backlight, and easy calibration, it offers reliable performance for all growing systems—indoor and outdoor.

Advantages at a glance

✅ Measures pH & temperature reliably in real time
✅ Automatic temperature compensation
✅ Calibrable with pH 4.0 & 7.0 – for highest accuracy
✅ Compact, waterproof & easy to use
✅ Ideal for hydroponics, coco, soil & aeroponic systems

Features & technical data

Measuring ranges:

• pH: 0.0 – 14.0 (Resolution: 0.1)

• Temperature: 0 – 50 °C / 32 – 122 °F (switchable)

Technical highlights:

• 2-point calibration (pH 4.0 & 7.0)

• Automatic temperature compensation

• Backlit display

• Hold function & auto-off

• Power supply: 1× AAA battery (included)

• Splash-proof (IP65)

Application & Notes

Suitable for: Hydroponics, RDWC, Coco, Soil, NFT & Drip Systems
Calibration: Recommended 1× per week for daily use
Care: Rinse with water after each use & store in storage solution
Tip: In combination with the Bluelab EC Pen, complete control over your nutrient solution

→ Calibrate before first use. Calibration solutions available separately.