warriorOnTheEdge
Bluelighter
Only source appears to be the "brotherhood of eternal love" book which is choc-full of bullshit.
Kemps acid only appears to have been recognised as the "best" because that was the urban myth that got started back then. I'm certainly not buying the theory that some hippie in the 70s could tell 99.7% pure acid from 97.9% pure simply by swallowing it.
The purity was also mentioned in Jay Stephens storming heaven and Busted, memoirs of a 70's drug squad officer.
Also wasn't Owsleys a higher purity than Sandoz?