Description
pH, EC and temperature together on one waterproof pen
The Bluelab OnePen is a 3-in-1 handheld meter that reads pH, conductivity (EC) and temperature from a single dip, with a replaceable double-junction pH probe and titanium conductivity electrodes so the pen itself never needs replacing when the sensor wears out. It is IP68 rated — fully dust and waterproof — and pairs over Bluetooth to the Edenic app, sending live readings to a phone for logging, trend tracking and remote viewing.
Key Benefits
- Three readings from one probe: pH, conductivity (EC, mS/cm, CF, ppm 500 or ppm 700) and temperature, shown together on a backlit display
- Replaceable probe with a health indicator, so the pen itself lasts far longer than a sealed meter
- Bluetooth to the Edenic app for real-time data, logging and remote monitoring from a phone
- IP68 waterproof — dust-tight and fully submersible, built for the reservoir edge
- Simple 2-point pH calibration with a probe-health prompt when recalibration is due
- 0.01 pH resolution for genuinely precise readings rather than a rough guide
Carrying two pens because one only does half the job?
Checking pH and EC separately means two pens, two calibration routines and two things to remember at the reservoir. The OnePen folds both into one dip, and because the probe is replaceable rather than the whole meter, it is built to be the last pH/EC pen a grower needs to buy.
How to Use
- Calibrate pH using the supplied pH 7.0 and pH 4.0 single-use sachets before first use, 2-point calibration
- Dip the probe fully into the nutrient solution or runoff and read pH, EC and temperature together on the display
- Connect via Bluetooth to the Edenic app for live readings, logging and calibration reminders
- Clean the probe with the supplied sensor cleaning brush and rinse after use
- Store the probe tip wet with the supplied KCl storage solution, never dry
- Replace batteries (2x AAA) when the display dims
Technical Specifications
- Measures: pH, conductivity (EC) and temperature simultaneously
- pH range: 0.0-14.0, resolution 0.01, accuracy ±0.05 at 25°C
- Temperature range: 0-50°C (32-122°F), resolution 0.1, accuracy ±1°C
- Conductivity range: EC/mS 0-10 (res 0.01, acc ±0.1) · CF 0-100 (res 0.1, acc ±1) · ppm 500 (TDS) 0-5000 (res 10, acc ±50) · ppm 700 0-7000 (res 10, acc ±70)
- Probe: replaceable double-junction pH probe with titanium conductivity electrodes, probe health indicator
- Connectivity: Bluetooth to the Edenic app for live data, logging and alerts
- Water resistance: IP68 — dust-tight and waterproof
- Power: 2x AAA alkaline battery
- Warranty: 2-year meter warranty, 6-month replacement probe warranty
- Box contents: OnePen with probe, sensor cleaning brush, pH 7.0 and pH 4.0 calibration sachets, KCl storage solution sachet
