Some products have trace amounts.  Northland Vapor Company tries not use any
flavorings that contain diacetyl, acetyl propionyl, or acetoin. Mint Chip is the only flavor in our Northland Vapor line that has trace amounts of diacetyl. None of our flavors in Borealis contain diacetyl, acetyl propionyl, or acetoin. Our Foggy Morning Vapor line contains trace amounts of diacetyl. We are working on getting Foggy Morning and Mint Chip lab tested, so you know exactly the amount within them. We will post the results here!  All of our ingredients are USP grade (United States Pharmacopeia).  We have the best interest of our customers and the reputation of the eLiquid industry at heart.