Generally, you can never vacuum liquids 100% airtight with commercial devices, because the pressure is stronger than the liquid. Caution is advised when vacuuming liquids, I have experienced many a mess in my professional life. I use this appliance very often privately, for liquids I do it as follows: Fill, insert the bag, remove the air by hand (this works very well with a lying bag!) and then seal the bag with the welding function without vacuuming. If you want to vacuum 100% airtight, then chill the liquid deeply in a flat container and then vacuum completely or in broken pieces. Greetings LH

Yes, you can, but then be sure to buy the Solis vacuum containers (in another set or sold separately), otherwise you'll have a mess ;-)