Bluelab
Bluelab OnePen™ – 3-in-1 pH, EC & Temperature Pen with Bluetooth App
Bluelab OnePen™ – 3-in-1 pH, EC & Temperature Pen with Bluetooth App
Couldn't load pickup availability
Measure Smarter. Grow Better.
Imagine never second-guessing your nutrient solution again. The Bluelab OnePen™ gives you instant, accurate readings of pH, Electrical Conductivity (EC), and Temperature — all from a single, pocket-sized pen. Whether you're dialling in a hydroponic system, checking runoff, or testing your water source, precise readings are just one click away.
Why Your Plants Will Thank You
pH determines how well your plants can absorb nutrients. EC tells you how much is in the solution. Temperature affects growth rate and structure. Miss any one of these, and you're leaving yield on the table. The Bluelab OnePen monitors all three simultaneously, so you can optimise nutrient uptake, reduce waste, and maximise plant quality and yield — every single grow.
Key Features
- ✅ 3-in-1 measurement — pH, EC/Conductivity & Temperature in one pen
- ✅ Replaceable double-junction pH probe & titanium EC electrodes for long-term accuracy
- ✅ Bright backlit display — simultaneous pH & EC readings at a glance
- ✅ 0.01 pH resolution for ultra-precise measurements
- ✅ Simple 2-point pH calibration — no guesswork
- ✅ Probe health indicator — know when it's time to recalibrate or replace
- ✅ IP68 rated — fully dust and waterproof
- ✅ Bluetooth connectivity — sync with the Edenic app for real-time remote monitoring
- ✅ Reads EC in multiple units: EC, mS/cm, CF, ppm 500 (TDS), ppm 700
- ✅ Temperature in °C or °F
- ✅ Compact & ergonomic — built for daily use in the grow room
Connect to the Edenic App via Bluetooth
Take your grow data to the next level. When paired with the Edenic app, you can view measurements remotely through the app or browser, receive real-time data updates, and manage your grow history — all from your phone.
Technical Specifications
| Parameter | Range | Resolution | Accuracy (at 25°C) |
|---|---|---|---|
| pH | 0.0 – 14.0 | 0.01 | ± 0.05 |
| Temperature (°C) | 0 – 50°C | 0.1 | ± 1°C |
| Temperature (°F) | 32 – 122°F | 0.1 | ± 1°F |
| EC / mS/cm | 0 – 10 | 0.01 | ± 0.1 |
| CF | 0 – 100 | 0.1 | ± 1 |
| ppm 500 (TDS) | 0 – 5000 | 10 | ± 50 |
| ppm 700 | 0 – 7000 | 10 | ± 70 |
| Operating Temp | 0 – 50°C / 32 – 122°F | — | — |
What's in the Box
- 1x Bluelab OnePen™ with Replaceable pH, EC & Temperature Probe
- 1x Bluelab Sensor Cleaning Brush
- 1x Bluelab pH 7.0 Calibration Solution sachet (18ml)
- 1x Bluelab pH 4.0 Calibration Solution sachet (18ml)
- 1x Bluelab KCl Storage Solution sachet (18ml)
Warranty
Backed by a 2-year limited warranty on the Bluelab OnePen™ and a 6-month warranty on the Replacement Probe. The Bluelab OnePen Replacement Probe is available separately when you need it.
Power: 2x AAA alkaline batteries (included)
Share
