Katink, apparently there are reports of liquid turning green without even being opened. I thought i was on to something there but it looks like we are chasing a ghost, i don't see any correlation in any of the events if it does not have to do with the glass dropper bottle, except that most (all except one, a generic from the UK) hulk incident has been Johnsons Creek Smoke Juice.
Maybe it has to do with the rubber bulb attached to the dropper? Could liquid flow in there during shipping, come back into the jar with a residue from the manufacturing of the rubber bulb, that oxidises and turns the juice green?
There's no way i can prove that, if that's the case. I don't even think the guy that makes JC juice knows what the hell is going on and it's his juice. I actually have a JC VG sampler here, but no extra plastic to put it in (also i don't use it, i dont like JC juice flavors, personal preference, so it'd be hard to test it). Additionally there are no reports of totally wicked e-liquid, which is also sold in glass dropper bottles to my understanding, hulking out.
Stumped.
edit: well my final guess is, there is a flavoring in these juices that is oxidizing and turning them green. My guess is that it's harmless, but the weird green sludge looks different and i wouldn't smoke that. The green color looks like oxidation, the sludge looks like a contaminant (either industrial or biological). I think the green sludge is actually a combination of oxidation and a contaminant.
Does the green sludge smell any different than the other juices? Usually biological contaminants will create a distinct smell, like yeasty, or funky/fishy, or sulfurous.
