A replacement probe for Bluelab Combo and pH Meters, and Guardian Monitors

The Bluelab pH Probe is a replacement pH probe (electrode) suitable for use with Bluelab products that test the pH value of a solution.

Unfortunately pH Probes do not last forever as they age through normal use and will eventually fail. With good care and use (keeping the probe tip wet and cleaning once a month) you will extend its life.

The Bluelab pH Probe has a double junction reference which provides a longer life than many other pH probes and is a gel filled non-refillable probe, so apart from cleaning is maintenance free.

Replace only the pH probe, not the whole meter

pH probe manuals
Technical specifications
US-English-Flag  English

Probe cable length: 2 meters / 6.5 feetpH Probe Technical Specification Sheet

WARNING: This product can expose you to chemicals including Di (2-ethylhexyl) phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov




Out of stock



The Bluelab pH Probe is dependable double-junction pH probe technology that’s built to last. It is a fully waterproofed probe and not just water-resistant meaning it is able to be full submerged. The Bluelab pH Probe is manufactured with a simple BNC connector this allows you to able to use this probe with any other compatible Bluelab product. Included along with the pH probe is a 2 Meter cable as well as storage cap with KCL solution with will lengthen the probes lifespan as well as keep it fresh.

The durable Bluelab pH Probe has been designed with longevity in mind, with a double-junction probe, poly-carbonate housing and high-quality electrical components Created with advanced and affordable technology, you can rely on Bluelab’s pH Probe to give you accurate and fast measurements every single time.

Other Features:

  • Fast sensor response ensures quick and accurate measurements  
  • Polycarbonate housing for long-lasting strength  
  • Effective in solutions of 0.2 EC and above 

Additional information

Weight 0.09 kg
Dimensions 17.5 × 4 × 4 cm