3M™ Zeta Plus™ BC Series are totally disposable capsule depth filters for laboratory, process development, scale-up or small lot production. The Zeta Plus BC Series is a range of completely encapsulated disposable depth filter assemblies, designed for small volume biological, bioprocess and pharmaceutical filtration. Zeta Plus BC units are available in three sizes with a wide range of industry-leading Zeta Plus depth filter media to provide a high degree of application flexibility.