Bluelab OnePen™ Replacement Probe nutrients and contributes to overall quality

and contributes to overall quality in these industries

Waterproof insert tray

keeping your eyes cool and moist under bright grow room lights

Understand daily

allowing for flexible placement of your devices

Bluelab OnePen™ Replacement Probe nutrients and contributes to overall qualityUnlock the secrets to thriving plants. Maximize the life & accuracy of your Bluelab OnePen Extends the life of your Bluelab OnePen, minimizing the need for full device replacements Quick and simple to replace, reducing downtime and keeping your OnePen functioning optimally Built to last with a double junction pH probe and titanium EC electrodes Delivers precise pH, Conductivity (EC), and Temperature readings with easy calibration Cost effective,