Water pH 6.8 - Runoff pH 6.8-7

Using MG organic potting soil. How do I determine the pH of my soil? I know MG is known for being on the acidic side... I watered with 6.8 and got 6.8-7.0 on the runoff. 1 gallon pots.

thats like perfect isnt it? i think thats exactly what you want- you test the run off and adjust soil to that