What kind of strips do I use to check PH balance?!

There are so many to choose from?! Which one is the correct kind to use? Need them ASAP

I used pHion brand which worked well for me but got an opposite with the "correct" pH.

I have the case against pH for swaying here - so many of us got opposites it became very hard to believe in pH any more. http://genderdreaming.com/forum/gend...ph-pickle.html