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This unit has been discontinued as of December 31, 2007.
TSI SureFlow™ Room Pressure Controls are designed to maintain more exhaust from a laboratory than is supplied to it. This negative air balance helps ensure that chemical vapors cannot diffuse outside the laboratory, complying with requirements in NFPA 45-2000 and ANSI Z9.5-2003. Optionally, a room pressure sensor can be connected to the SureFlow Model 8680 controller to correct long-term changes in the building dynamics.