Bluelab Inline pH ProbeOverview The Bluelab pH Inline Probe is a replaceable double junction probe designed for use alongside your Bluelab Guardian Monitor Connect. General Information Designed with longevity in mind, the double junction probe is encased in a high pressure housing and utilising high quality electrical components. Benefits Double junction probe reduces reference contamination Fully waterproof 3 4" NPT thread fits inline mounting with the use of 1" adaptor 3m
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