New member
I was wondering when your testing for ph, do you guys hold the test tube away from the card or right against the card to measure the color. Because each way is a different result. Which way is accurate?


Premium Member
Most titration pH test kits recommend holding it up against the card.

There is quite a difference in color between the two.

A lot of us just decided to get an electronic pH monitor. It's nice to just look up and see my pH is ok. Or sometimes it's not. :lol: