Bluelab One Pen Replacement Probe – IP68 Waterproof Sensor

Bluelab OnePen™ Replacement Probe – Seamless Compatibility, Precision Restored

When your Bluelab OnePen starts to drift, replace the sensor—not the meter. This genuine OnePen probe replacement restores precise pH, EC, and temperature readings, extending device life and reducing waste.

Key Features & Benefits

• Durable sensor build: Double‑junction pH probe and titanium EC electrodes resist contamination and corrosion.
• IP68 waterproof & dustproof: Fully sealed for humid, nutrient‑rich environments.
• Fast swap, minimal downtime: Unscrew the old probe, fit the new one, recalibrate, and get back to work.
• Accurate pH/EC/temp readings: Keeps your pH EC temperature sensor performance on point with straightforward calibration.
• Cost‑effective: Prolongs OnePen lifespan versus full device replacement; ideal Bluelab spare part for maintenance.

Why Choose a Genuine Bluelab Probe Replacement

Official Bluelab probe replacement guarantees fit and performance with the OnePen™. Precision components and robust sealing deliver long service life in real grow conditions.

How to Replace Your OnePen™ Probe

1. Power off the OnePen™ and remove the storage cap.
2. Unscrew the probe collar and pull the old probe straight out.
3. Align and insert the new probe; hand‑tighten the collar until secure.
4. Calibrate pH (two‑point: 7.0 then 4.0) and verify EC with the appropriate standard.

Care & Maintenance Tips

• Rinse after use; clean the glass bulb and EC surfaces periodically.
• Store pH glass in KCl storage solution to prevent drying and crystallisation.
• Re‑calibrate regularly and keep caps/seals tight to maintain IP68 protection.

Restore accuracy in minutes with the genuine Bluelab OnePen replacement probe—the reliable, IP68‑rated sensor built for hydro environments.