The DECON/pak Portable Decontamination System is a self-contained agent proportioning and rinse application system developed specifically for gross decontamination of firefighting personnel and equipment. Inject a variety of approved personal protective clothing gross decontamination agents from 0.1% to 0.5% The rugged green polypropylene 9.5 l (2.5 gal.) concentrate tank is supplied by a pressurized 25 or 38 mm (1 or 1 ½") hoseline. The unit includes an integrated twist shut-off valve, selective injection metering knob, and is easily disassembled for cleaning. The pressure vacuum seal on the lid and inlet debris screen assure that the approved decontamination agent chosen can be stored ready for immediate use. A detachable fan spray nozzle is attached to a 3.7 m (12') discharge hose for ease of use during agent application or rinsing operations.