Bittering agent

[Isabelle49]

Is bittering agent now added to propylene glycol as well as to the other most used antifreeze products, I.e., ethylene glycol? Thanks

 

[man00ver]

I wouldn't think so. In fact, only a handful of states require bittering agents to be added to even EG-based antifreeze, and none require it to be added to base EG, much less PG. From a vaping perspective, you'd only have to read the label or inquire from the seller whether any additional ingredients were added to the PG you want to buy.