I just order a few bottles and vape my least favorite letting the others sit for a week or two. I'll keep all the lids off for a day or so.
...This is a natural process like putting sugar in tea. Yes I understand that the flavoring is in liquid and not solid form in most cases but the theory remains solid.
(here comes the old internet comment)
'I was told' by a chemist that the flavorings were a crystalized product that will break down in time and saturate the liquid you put it into. By shaking it and allowing it to stand it will spread to the other juice you have added it to (or had it mixed for you). This is a natural process like putting sugar in tea. Yes I understand that the flavoring is in liquid and not solid form in most cases but the theory remains solid.
Nope. Flavors are completely dissolved in juice from the very beginning. Something more complicated happens, like weak chemical bonds forming (may be).
I respectfully but wholeheartedly disagree. To suggest that flavors are completely dissolved in juice from the very beginning is an overgeneralization. It all depends on the ingredients used. Some liquids are simply more miscible than others. When a liquid can completely dissolve in another liquid, the two liquids are considered miscible. Miscibility is the property of substances to mix in all proportions, forming a homogeneous solution. Since flavors are in fact compound substances, it varies by the substances used, and by the proportions of these substances to each other. That is not to suggest that other chemical reactions or bonds may not also occur; every different substance, however, has a different degree of solubility.
Flavors are already dissolved in PG or alcohol when they are put in juice. PG and VG are miscibile, so no problems at all with solubility.
PG and VG are miscible, but how miscible are the flavorings used? The solubility of a substance fundamentally depends on the physical and chemical properties of the solute and solvent as well as on temperature, pressure and the pH of the solution. Recipes for juices (and preferences for how much flavor is used, as well as their ingredients) vary widely, and this is proportionate to the amount of PG and/or VG to which it is added. In a stable environment, it may take significantly shorter or longer periods of time for an optimal or ideal degree of saturation to occur. This is why steeping a juice may result in significant differences in taste.