Perlite is a lightweight expanded bubble structures from volcanic glass that are milled and classified into powders that are used in both pressure and vacuum filtration equipment. Perlite filter aids are inert and will impart no taste or odor into wine, and are virtually insoluble in mineral and organic acids at all temperatures. Various grades are available, so please contact an ATP rep about your particular need.
Application: Usually added as a filtration aid during filtration or as a pre-coat at the start of the filtration cycle.
Packaging: 25-35 lb. bag depending on grade.