The Bluelab Soil pH Pen is a handheld meter designed to measure pH and temperature directly within soil and growing media. It enables in-situ root zone testing, allowing measurements to be taken directly where plant roots are active rather than relying on extracted samples or slurry methods.
Suitable for use in soil, coco coir, rockwool, and nutrient solutions, the pen provides a practical method for checking media conditions across a range of growing environments. Its design includes a double-junction pH probe and a fully waterproof body, supporting reliable operation during routine testing.
The unit features a backlit display for clear readings and simple two-point calibration, along with a built-in calibration reminder. A dual-purpose storage cap with dibber is included to assist with preparing the media before measurement, helping ensure correct probe placement without damaging the sensor.
A handheld meter for direct pH and temperature measurement in soil, substrate, and solution.
Direct root-zone testing
Measure at root level
pH and temperature
Dual-parameter readings
Accurate pH readings
±0.1 pH accuracy
Low Stock - 1 available
Low Stock - 1 available
Back-OrderCurrently out of stock: back-order now to reserve yours from the next shipment.Estimated dispatch around 15 November.
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We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
Low Stock - 1 available
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