I may have hit on the partial answer as to why some have lots of micro-bubbles and some just have few bubbles and some may not report any.
I had not used any Pourasol in a few days and wanted to get the soft pack mixed back up. Turned my jugs over and left them for an hour or so. Came back and there was a nice ring of plastisol on the shop floor.
I know if plastisol can get out, moisture can get in. Stabilizer is made in a way that some "salts" are introduced into the plastisol.
My theory is, the HIGH (80-90%) humidity, is getting into my plastisol, even though the lids are on as tight as you could get one.
I have a way of evacuating the humidity (water) out via a buddy so I am going to take a sample to be de-aired.
I do think the microwave still is causing some issue via the rapid cook but my hunch is guys are seeing this in places with very high humidity because the jug/lid combo is not effectively sealing out the moisture. Plus, Spike It is here in GA, where the humidity is HIGH. Another chance for contamination right out of the factory...
Will update after de-airing...
Jim