Ph probe compression fitting?

[andyr45]

Where can I get a compression fitting to hold an inline ph sensor?

 

[ReefWreak]

I think this was brought up a few months back on here, and if I remember correctly, Andy (saltwaterfishlover) suggested/showed how to make a ph probe holder out of a PVC cap or something like that. maybe if you search the forum for it you can find it, but other than that, your guess is as good as mine.

 

[saltwaterfishlover]

I think it is a 1/2" guest fitting from lowes or Home depot.... very gently drilled out from the back side to allow it to fit all the way through