The FDA has required that all newly deemed tobacco products must submit a Premarket Tobacco Product Application (PMTA).  This includes 95%+ of the vapor products and E-Liquids on the market.
Due to the cost and time required for each product Mister-E-Liquid will only be submitting PMTA's for a handful of products. All other Mister-E-Liquid products will not be replenished once sold out so get them while you can.
The Mister-E-Liquids that will still be available are:
American Blend- Formerly Red Rider
Clear- No Flavor Added
Grey Matter- Currently not carried by Steel City Vapors
Latitude 45- Formerly Pure Michigan
Major Jade- Formerly Jade Tiger
Menthol- Formerly Menthol Standard
Perfect Peach- Formerly Dime Piece
Raspberry Cooler
Straight Grape
Vendetta Blue- Formerly Blue Voodoo
Vista 21- Formerly Casino 21
These flavors will be available in 0,3,6,12, and 18mg.