Dicalite 215 is a calcined material produced as a baghouse product from straight calcined production. This grade cannot be precoated by itself on metal screen filters. Dicalite 215 has the lowest flowrate exhibiting a Darcy permeability of 0.02 and mean particle size of 12-18. It removes the smallest size suspended matter of any Dicalite filter aid product. Dicalite 215 is categorized as a “Polishing Grade” and is best used in filtration applications that require a very sparkling finish such as wine.