GHL pH Probe and Fluids - Still Good?

[layer3switchguy]

Folks,

I have a never been used GHL pH probe and fluids that have sat in their original packaging for about 17 months, never been open. Are they still usable, or do I need to replace them?

Thanks!
L3

 

[AQD_ottawa]

I would replace the fluids they only have a shelf life of a year this is standard with all fluids for calibration.

The probe - only way of telling is to use it. But a probe no matter who makes it is degenerative and should be replaced annually, but with GHL probes I am confident you would get 18 months or more out of them as they seem pretty bullet proof, I have one going strong after 5 years, the way to know is how long they take to calibrate, if they are taking more than 5 minutes per set point then replace them

 

[layer3switchguy]

Great, thanks Michael! I'll get some new fluids and give it a shot.

 

[layer3switchguy]

Just wanted to share. both the fluids and the probe calibrated correctly after 17 months sitting in the box unopened! Pretty impressive for sure, and a testament to the quality GHL provides!