Probe for the continuous Ph meters of the Bluelab brand. It is the same PH probe for all meter models, both the Ph alone, the Combo or the Guardian Bluelab.
If the PH probe of your Bluelab meter has broken, you now have the replacement probe to make it like new.
This probe is suitable for all models of Bluelab brand continuous PH meters, both the PH alone, the Combo or the Guardian Bluelab.
Bluelab PH probes are maintenance-free, they are filled with a gel that gives them a long useful life.