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A worn probe shouldn't mean replacing your entire Bluelab OnePen. The Bluelab OnePen Replacement Probe restores accurate pH, conductivity (EC), and temperature readings to a meter showing signs of wear, extending the life of your device without the cost of buying a new pen.
Built with the same double-junction pH probe and titanium EC electrodes as the original, this replacement delivers precise readings with straightforward calibration using pH 7.0 and pH 4.0 buffer solutions. It's quick and simple to install, minimizing downtime so you're back to monitoring your plants in minutes rather than waiting on a full device replacement.
Made from high-quality materials and rated IP68 for dust and water resistance, the replacement probe is built to hold up in tough growing environments. It's a cost-effective, sustainable way to keep your equipment performing at its best; remember to use KCl storage solution to maintain the sensitivity and longevity of the new sensors.
Minimizes the need for full device replacements down the road.
Durable pH probe and titanium EC electrodes built to last.
Accurate pH, EC, and temperature data with easy calibration.
Certified sealed rating for tough growing environments.
A sustainable way to keep your handheld meter performing at its best.
It's a full pH, conductivity (EC), and temperature probe assembly built with a double-junction pH probe and titanium EC electrodes, matching the original OnePen probe.
Signs of wear and tear, or readings that seem less accurate than they used to be, are good indicators it's time for a fresh probe.
No. While the Bluelab pH Pen is a standalone unit, this probe is designed specifically as a replacement for the Bluelab OnePen.
No. It's designed to be quick and simple to swap in, minimizing downtime so you can get back to monitoring your plants.
Yes. It's IP68-certified for dust and water resistance, suited to demanding grow room and reservoir conditions.
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
Equipping home growers, craft producers, and commercial operations across North America since 2016.
