The EcoFilter line of biotrickling filters from BioAir Solutions is capable of removing more than 99.9 percent of H2S and more than 95 percent of total odors from collections system and wastewater treatment plant airstreams in as little as six seconds EBRT. The units have a small footprint yet can be expanded to meet specific facility needs. They use no hazardous chemicals or consumables, incorporating EcoBase structured synthetic media to deliver consistent performance across the media bed throughout the 20-year-plus life of the system. 856/258-6969; www.bioairsolutions.com.