### TLC/HPLC/RP-HPLC Question

Posted:

**Sat Jun 29, 2019 10:19 pm**Hello!

I'm having some trouble understanding what exactly are mobile and stationary phases for the three tests above. I know it's a great way to view the polarities of compounds and NOT isolate them, but I don't understand what it means for a mobile or stationary phase to be polar/nonpolar and the significance of what that means. Would anyone be willing to help me out?

I'm having some trouble understanding what exactly are mobile and stationary phases for the three tests above. I know it's a great way to view the polarities of compounds and NOT isolate them, but I don't understand what it means for a mobile or stationary phase to be polar/nonpolar and the significance of what that means. Would anyone be willing to help me out?