Good day
This new pmk they are selling is horrible at least for me. I have tried to do it the old conversation way and what's recommend by suppliers. Bought from multiple vendors end product ends dirty with low yields and need to distill. The methods they recommend is to us sulfuric acid and and water heated for 23 hours. Then wait for it to separate. Another method is with ethanol with hcl. All I can say is you end up mdp2p. I am waiting to see if someone comes with better method.