Water to use for pH test

Should I use distilled water when I water enough to get run-off for a pH test?

Thanks!!!

If you are just wanting see what the ph is coming out, then just properly ph the water going in. Once you get enough runoff then use meter to test runoff from soil. If you are in soil then your runoff should be between 6.3 and 6 8 If you are in Coco then you would want the water going in 5.8 and coming out the same.

That makes complete sense - I wasn’t picking up exactly how the pH testing worked. Appreciate it!