Bluelab OnePen with Replaceable pH, Conductivity (EC), and Temperature Probe. This 3-in-1 tool measures pH, Conductivity (EC/PPM), and temperature, optimising nutrient uptake. Connect to the Edenic app via Bluetooth for real-time sharing, updates, and comprehensive data management.

One Click Data Capture
Record, store, categorise and share your measurements in one easy-to-use app. Unlock the full potential of data with the OnePen and the Edenic app.

Superior Durability and Easy Maintenance
Double-junction pH probe, titanium electrodes, and an IP68 dust and waterproof rating deliver durability, while the replaceable probe and health indicator simplify maintenance for long-lasting performance.

Precision and Prolonged Accuracy
Get fast, precise readings down to 2 decimals. This reliable information empowers growers to make confident decisions, saving you time and ensuring optimal plant growth.

User Experience and Design
This pen's ergonomic build and high-contrast backlit display also features simultaneous pH and Conductivity (EC) readings for a seamless user experience.

Advanced Connectivity and Data Management
Real-time data sharing, software updates, and more - this pen is packed with features to optimise your growing experience.

Product Features:
Replaceable probe and health indicator
Precise readings down to 2 decimals
Ergonomic build and high-contrast backlit display
IP68 dust and waterproof rated
Suitable for nutrient solution
One-click data - download the Edenic app and connect via Bluetooth
Real-time data sharing and software updates
View measurements remotely
2-Year limited warranty for the Bluelab ONE Pen; 6-months for the Bluelab ONE Replacement Probe. Details available at bluelab.com/product-warranty