The Cherokee Nation Clean Air Program is requesting bids for a UV absorption ozone analyzer to be operated for regulatory ambient air monitoring. Specifications: -US EPA Federal Equivalent Method (FEM) certification required -Must use UV photometric/absorption method of measurement -Instrument measurement range to accommodate a testing range of 0-500 ppb -Linearity of ± 1% of full scale -Temperature and pressure compensation -Internal Zero/Span (IZS) option – required for automated nightly zero/span checks. -Must include analog inputs and outputs, an Ethernet port, and an RS-232 port for communication to data logging devices – The Clean Air program operates the ESC/Agilaire datalogger models 8864 and 8872. -Power supply of 115 VAC -Rack mount slides kit - 24" length (for standard 19” width rack) – This is the rack size utilized at the CN air monitoring sites.