The Bluelab pH Probe is a replacement pH probe for the Bluelab Guardian Monitor and the Combo Meter. Dependable double-junction pH probe technology that's built to last.

• Double-junction probe reduces reference contamination, extending longevity  
• Fully waterproof - not just water resistant  
• BNC connector allows use with all other compatible Bluelab products  
• 2-metre cable for measuring in hard-to-reach locations 
• Use the included storage cap with KCl to lengthen probe’s lifespan 
• Fast sensor response ensures quick and accurate measurements  
• Polycarbonate housing for long-lasting strength  
• Effective in solutions of 0.2 EC and above 

Six-month guarantee for the Bluelab pH Probe (proof of purchase is required). Find out more about our product warranties. 

Durable and affordable probe technology 

Accurate and quick pH measurements

The durable Bluelab pH Probe has been designed with longevity in mind, with a double-junction probe, polycarbonate 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.   

pH Probes will not last you forever so make sure to take good care by cleaning the probe once a month to extend the use of the probe.

Bluelab pH Probe maintenance

Extend the life of your pH probe

You need to regularly clean and maintain your Bluelab pH Probe to ensure its ongoing accuracy and longevity. 

Use Bluelab’s Probe Care Kit, which contains everything you need to clean and care for your pH probe. Every time you clean your probe, calibrate it using Bluelab Calibration Solutions.  

 In addition, boost your probe’s lifespan by ensuring that its tip stays wet at all times. Use the included storage cap whenever you’re not using your probe and regularly top up the amount of "KCl" solution inside the cap.  

This probe is compatible with all Bluelab products with a corresponding BNC connector, such as the Combo Meter and Guardian Monitor. 

Replace only the pH probe, not the whole meter.