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Type C1 Models
1: Unlike Type B biosafety cabinets, the recommended vacuum will remain constant
throughout the life of the exhaust HEPA filter. Duct vacuums below 0.05 inches H
2
O
(12 Pa) or above 0.5 inches H
2
O (125 Pa) may result in erratic operation and throw an
alarm condition from the product.
2: WC = Inches of Water Column, typically expressed in units of inches H
2
O.