I just recently had a talk with Breaker about the importance of purity with the gear we all use. I was thinking 65% purity sounds like shit ass gear but yet the mg/ml is spot on? So I had to clear it up and breaker said just enough for me to go "oh, yeah, duh" but just to make sure I'm not the only one clouded by this I simplified a nice explanation here:

If you get gear with super pure raws (low-no
filler/cut) your gear will be more pure (consisting of the oil/benzyl alcohol/benzyl benzoate/GEAR). So in cases where the raws are "cut" (most are) the source just has to add more raws to get the correct mg/ml because his/her raws aren't quiet as pure (your gear now consisting of the oil/benzyl alcohol/benzyl benzoate/GEAR/cut). So the only down side?? Really nothing we would notice without Beaker! Unless it's super impure affecting mg/ml and/or causing pip/health issues.

Saying that a higher purity rating means the gear is "cleaner" is, to me, not a good way to state it. The "cut" that the companies use making these raws are not "dirty" by any means. So do not worry guys and girls! I hope I was as helpful to you as Breaker is to me!