Most plastic purging compounds are composed of a proprietary blend of resins, abrasive fillers and various cleaning additives, the details of which are unknown to the user.
After the purging process, you are left with unclassifiable compound – not very reusable.
PurgeUSA is only the additive portion of a purging compound put in your own known resin purchased at volume pricing. You create your own custom plastic purging agent!
After purging, what remains is your known resin containing 0.2% PurgeUSA plus impurities very effectively removed from your machine. 96% of PurgeUSA evaporates at the nozzle, 4% is left behind in the resin, and since you originally used 5% by weight, 0.2% PurgeUSA remains.
What do you do with your used purging compound? You can regrind it, add more PurgeUSA and purge again, blend it off into a dark-color same resin for making non-critical products, or resell it as known scrap.
If none of the above is a viable solution, the remaining reality is you have superbly cleaned your machine while creating a much smaller amount of scrap purging material.