They produce a small vapour with a 50/50 VG/PG concentration, making them perfect for MTL (mouth-to-lung) kits. You're covered if you need the fitting vape kit with your new Elflliq e-liquids. Elf Liq Nic Salt 5mg/10mg/20mg 10ml E Liquids | Vape Juice | 50VG/50PG | New Flavours| UK.