Generally the more processed/refined it is the longer the shelf life and the more hygroscopic it'll be (with some caveats since they can oxidize faster when exposed to O2, which is why a nitrogen blanket gas is preferred for long term storage but they dont go "rancid" like full spec shit would). Which means it'll hold more solute in solution. The flip side to this coin is that it might conversely cause more PIP. I've got my sneaking suspicions about what causes issues with PIP and MCT blends or MCT fractions but its simply opinion based and I'm not very smart. I personally love the shit however and I've brewed liters in mct based fractions and blends including Miglyol variations and this same C8 isolate. in bulk i usually guy it by the gallon it goes by Glyceryl Trioctanoate CAS #538-23-8 i believe and its all pretty much from the same source. I think medlab just rebrands it with a "Vale of Eden" packaging. Again, not very smart, im sure there are smarter folks in here that can guide you better than I.