Make sure it's universal.  If I'm not mistaken it should have ISO written somewere.  Some require certain scanners while a few can be scan with any scanners.   
I called my vet and checked which brand she uses and I then called shelters to see which ones they use.  Then read and do your research which one you think is more convenient for you and your furbutt.  Good luck!!     
				__________________  XOXO JiJi , JiJa Lil' Man and Mommy        |