Pentek is a manufacturer of the VAC-PAC high-performance HEPA vacuum and waste collection system. The technology offered by Pentek makes it possible to deploy completely automated work modules to large vertical surfaces while eliminating scaffolding, respiratory protection and other utilities/safety equipment normally required to protect workers. Its wall-servicing robots cut costs through their fully computerized decontamination, surveillance and maintenance capabilities. Flexibility of design, reliability of operation and portability has earned the VAC-PAC an enviable reputation in the hazardous waste management industry. Standard VAC-PAC features provide for direct transfer of hazardous waste into an integral waste drum and an efficient two-stage filtration system, which cleans itself online automatically with continuous reverse-flow pulses of high-pressure air. Pentek has an office in Coraopolis, Pa.