Used as Column Filling. This filling has a surface area of 2000 - Raschig Rings 6x6 mm have 940. More then double and the same free volume! The SaddleFillings are made of ceramics and have a large surface area and are used as heat distributors in boiling or column-filling for the reflux distilling apparatus. Size 4x4 mm.
Never use scrub pads without a food grade certificate, they can be made of recycled metal and contain lead etc.