Before buying it, i asked if it works with vegetable glycerin (VG) 99.5% and they said that is does. After testing it, it doesn't work verry good. It works extremely slow and after seeting a timer, every time it gives different quantity. So, if u need this device for vegetable glycerin (VG) 99.5%, i would not recommend this product. But, to be fair, in description it does say it is for low-viscosity liquids.