HI guys,

Sorry if this has been asked before, but a quick search didn't yield any results. When I first set up my P3 I used the calibration fluid (x2) for my ph probe. Time has passed and I am wondering if I can still rely on the calibration fluid. It has been kelp in the dark sealed tightly in their respective bottles.

Do I need to order more fluid, of should I be ok?

Thanks
Paul