Premium 3-in-1 pH, EC & Temperature Meter for Advanced Growers The Bluelab OnePen is the next-generation handheld meter designed for growers who demand precise, reliable measurements of pH, Conductivity (EC/PPM), and Temperature. Built with a durable IP68 waterproof rating, replaceable multi-function probe, and Bluetooth integration, the OnePen provides consistent nutrient insight for hydroponics, coco, soil, and runoff testing. Connect to the Edenic app to sync readings, store data, share measurements, and monitor your grow from anywhere—making the OnePen a complete digital nutrient management system. Key Features & Benefits 3-in-1 Measurement ToolAccurately measures pH, EC/PPM, and Temperature simultaneously. Replaceable Multi-Function ProbeLong-lasting, double-junction pH design with a probe health indicator for optimal accuracy. Advanced Bluetooth ConnectivityConnect to the Edenic app for remote viewing, data logging, exporting, alerts, and updates. High-Contrast Backlit DisplayErgonomic design with clear, simultaneous pH and EC readings on-screen. Multiple Conductivity ScalesEC, CF, PPM 500 (TDS), PPM 700. Temperature OptionsSwitch between °C and °F easily. IP68 Waterproof & DustproofBuilt for demanding grow environments and long-term durability. Fast, Precise Readings±0.05 pH accuracy with 0.01 pH resolution and quick temperature compensation. Made in New ZealandIndustrial-grade components including titanium electrodes and rugged sealing. Product Specifications Category Detail Model OnePen Measurement Types pH, EC/PPM, Temperature pH Range 0.0 – 14.0 pH pH Resolution 0.01 pH pH Accuracy ±0.05 pH EC Range 0–10.0 EC, 0–100 CF, 0–5000 ppm (TDS), 0–7000 ppm (700 scale) EC Resolution 0.01 EC EC Accuracy ±0.1 EC Temperature Range 0–50°C / 32–122°F Temperature Accuracy ±1°C Temperature Compensation Automatic Ingress Rating IP68 waterproof/dustproof Connectivity Bluetooth 5 (Low Energy) Signal Range 10 meters (33 ft) Power 2× AAA batteries Certifications CE, FCC, IC, UKCA Operating Environment 0–50°C (Do not store outside this range) Warranty 2-Year Limited Warranty (6 months for probe) What’s Included 1× Bluelab OnePen (Replaceable pH/EC/Temp Probe) 3× Calibration/Storage Solution Sachets (pH 7.0, pH 4.0, KCl) 1× Bluelab Sensor Cleaning Brush 2× AAA Batteries User Manual Warranty, Returns & Shipping Warranty: 2-Year Limited Warranty 6-Month Probe Warranty Returns:Returns only accepted for warranty-related issues. Lead Time:Receive this item in 3–7 days. Warehouse:Ships from Happy Hydro. Why Choose Bluelab at Happy Hydro Bluelab is the global standard for precision nutrient testing, delivering lab-grade accuracy and long-term reliability. Happy Hydro provides fast fulfillment, expert support, and guaranteed authentic Bluelab products—trusted by hydroponic, indoor, and commercial growers worldwide.
