Operator, Product and Environmental Protection via controlled inflow, downflow and exhaust similar to Class II Type A2 biosafety cabinet technology. ISO Class 3 air cleanliness within workzone as per ISO 14644.1 (equivalent to Class 1 as per the US Federal Standard 209E, 100 times cleaner than the usual Class 100 classification on cabinets offered by the competition). Disposable high-quality polyester pre-filter with 85% arrestance located under the work tray removes large contaminants and particles. Minipleat separatorless ULPA filter technology , operating at the typical efficiency of 99.999% at MPPS, 0.3 and 0.12 microns provides better operator, product and environmental protection than conventional HEPA filters. This cabinet employs 2 ULPA filters, 1 for downflow and 1 for exhaust airflow filtration. Esco Sentinel Microprocessor allows the operator to easily access and control all cabinet functions on the LCD screen.