The new, ultra-fine secondary air-filter range (photo) is designed for use with this company’s vacuum conveying systems. Available as standard accessories, the sterile filters are of the ultra-fine filtration class — U15-17 — or ultra-low penetration air (ULPA) filters. The filtration efficiency is rated at 99.9999%. The new filter units offer greatly improved filtration performance when compared with the high-efficiency particulate air (HEPA) filters that are often used in industry settings. Designed to fit the capacity of any compressed-air-driven vacuum pump, the filters can be used in a broad range of vacuum conveying applications. — Piab AB, Täby, Sweden