Propylene Glycol, or PG, is on the FDA's list of substances generally recognized as safe, and is used in everything from intravenous medicine and fog machines to artificial flavors.
Lab technicians at Johnson Creek Enterprises work in a sterile environment while they manufacture “smoke juice” for smoke-free electronic cigarettes....
Only seven ingredients go into each bottle, compared with nearly 4,000 for a regular cigarette. Johnson Creek lists its ingredients right on the bottle and on its Web site:
· Propylene Glycol (in PG Recipe) · Food-grade Vegetable Glycerin · Food-grade Glycerol · Distilled water · Nicotine (except in Zero Nicotine recipe) · Natural Flavors · Artificial flavors · Citric Acid
The products are created in a sterile, climate-controlled lab with purified air. The water used for the product isn't exposed to "normal" air from the time it enters the facility, through the creation process and until the product arrives in the consumers mailbox.
"We are absolutely fanatical about the conditions under which our smoke juice is made." Christian Berkey, CEO