3M� Zeta Plus� BC Series Filter Capsule BC1000AR 31SP, 850 sq cm, 1/Case Zeta Plus� BC Series Filter Capsule with Activated Carbon Series Media contains activated carbon to decolorize and remove contaminants from process streams. The media can be used in applications where bulk activated carbon is used. Activated carbon particles and cellulose fibers mechanically filter contaminants while a positively charged polymer resin may adsorb negatively charged particles. UPC: 00016145195686