Inquiry (采购产品): DID series 590 I need to analyze using the Haysep DB column. Which direction is correct for the valves to be set. The column is on the right side of the instrument. **** Hidden Message ***** gary emerson 98108 Company: Airgas NORPAC E-mail: gary.emerson@airgas.com **** Hidden Message ***** gary.emerson@airgas.com
