Bluelab pH PenPlus gives you fast, dependable pH and temperature readings with one major upgrade over a conventional pH pen: when the probe eventually wears, you can replace the probe rather than the whole meter.
Built for regular use around nutrient tanks and hydroponic systems, the PenPlus uses a double-junction pH probe, has a bright backlit display and is IP68 dustproof and waterproof. Two-point calibration and a 30-day calibration reminder make it straightforward to keep readings on track.
Why choose the Bluelab pH PenPlus?
- Measures pH and temperature
- 0.0 to 14.0 pH measurement range
- 0.1 pH resolution and ±0.1 pH accuracy at 25°C
- Replaceable pH and temperature probe
- Double-junction probe design
- Simple two-point calibration with 30-day reminder
- Bright backlit display and hold-reading function
- IP68 dustproof and waterproof construction
- Temperature display in °C or °F
- 2-year limited meter warranty. Probe warranty is 6 months
Keep it accurate
pH probes need regular cleaning, calibration and correct storage. We recommend keeping a Bluelab pH Probe Care Kit alongside the PenPlus. For routine calibration, use pH 4 and pH 7 Buffer Solution. Keep the probe hydrated between uses with KCl pH Probe Storage Solution. If you want pH and EC probe maintenance together, see the Bluelab pH & EC Probe Care Kit.
When the probe eventually wears out, you don't need a new pen — just fit the Bluelab pH PenPlus Replacement Probe. For the exact-match Bluelab-branded storage solution, see Bluelab KCl Storage Solution (100ml).
For growers who also want conductivity readings, pair it with the Bluelab EC Pen. If you would rather have pH, EC and temperature in a single handheld meter with app connectivity, see the Bluelab OnePen.
What's in the box?
- Bluelab pH PenPlus with replaceable pH and temperature probe
- 18 ml pH 7.0 calibration solution sachet
- 18 ml pH 4.0 calibration solution sachet
- KCl storage solution