Positive pressure work cabinet and hood, with HEPA filters, for laboratory use for use in creating contamination free sterile air flow throughout work areas

DUST FREE WORK BENCHES AND CABINETS AND ACCESSORY EQUIPMENT THEREFOR, DUST CONTROLLED ROOMS AND ACCESSORY EQUIPMENT THEREFOR, AIR CLEANERS, DRY BOXES, AND ACCESSORY EQUIPMENT THEREFOR, AND VACUUM OVENS AND ACCESSORY EQUIPMENT AND CONTROLS THEREFOR.