American Blend flavour is available in 10 ml, 30 ml and 50 ml. For sizes larger than 10 ml, e-liquids containing nicotine are not allowed for sale in the countries of the European Union. To allow vaporizers to create nicotine blends from our nicotine-free e-liquids, we offer the separately available nicotine booster Crystal 18 mg. LIQUA E-Liquids comply with the strictest EU and US standards. They are composed of high-quality ingredients. The bottle has a safety cap that is inaccessible to children. The PG/VG ratio is 50/50.