Bluelab pH Probe Inline

Pressure-Rated pH Sensing Inside Your Irrigation Line, 100 psi

Standard pH probes are not designed to sit in a pressurized line. The Bluelab pH Probe Inline has a threaded head that installs directly into irrigation lines for in-line measurement, with a 100 psi / 7 bar pressure rating. Double-junction construction and a KCl-filled storage cap support accurate, long-lived readings.

It suits Guardian Monitor Inline owners and fertigation systems that need a replacement or spare inline probe. An adapter fits female 1" NPT pipe fittings.

Key Features & Benefits

• 3/4" threaded head — mounts in any direction; adapter fits female 1" NPT fittings.
• 100 psi / 7 bar rating — for pressurized irrigation lines.
• Double-junction design — with a KCl-filled storage cap.
• 3 m / 9.8 ft cable — standard BNC connector.

Who Should Use the pH Probe Inline

Owners of the Bluelab Guardian Monitor Inline and growers measuring pH inside pressurized fertigation or irrigation lines.

About Bluelab pH Probe Inline

The pH Probe Inline reads pH 0.0–14.0 at device resolutions of 0.1 and 0.01 pH, in solutions of 0.2 EC and above from 0–100°C / 32–212°F. It carries a 1-year limited warranty.

Frequently Asked Questions

Which monitor does it replace the probe on?

It is the replacement pH probe for the Bluelab Guardian Monitor Inline. Its BNC connector also matches other Bluelab BNC devices.

How does it install?

The 3/4" threaded head screws into the line and can be mounted in any direction. Using the adapter, it fits female 1" NPT pipe fittings.

What pressure can it handle?

It is rated to 100 psi (7 bar). Keep line pressure within that rating.

Why measure pH in the line instead of the tank?

In dosed systems, the solution in the line is what reaches plants, and it can differ from the tank. Measuring in-line confirms the pH plants receive.