The Protector XStream Laboratory Hood takes containment, safety and energy savings to the extreme. This general chemical, high performance fume hood was independently tested and challenged well beyond the SEFA-1 standards. With a face velocity of 40 fpm and sash fully open, the Protector XStream was subjected to 50 fpm cross drafts, NIH protocol, and tracer gas measurements in the chest of the mannequin. In all scenarios, the Protector XStream allowed 0.00 ppm average level of tracer gas outside the fume hood.