Specifications include, but are not limited to: We are seeking a segmented flow analyzer capable of analyzing nitrate, ammonium, and soluble reactive phosphorus concentrations in surface water and groundwater. We require the instrument and bid to meet the following specifications: - Methods: Must use colorimetric analysis for estimation of NOx (using cadmium reduction method), NH3, and orthophosphate (using molybdenum blue method) concentrations. - Must use standard analytical methods capable of achieving high quality results in the following concentrations ranges: o Nitrate-N: 0.01 mg/L – 20 mg/L o Ammonium: 10 ug/L – 3000 ug/L o SRP: 10 ug/L – 600 ug/L - 3 separate/individual channels. Capacity to add/change channels in future as lab needs evolve. - High resolution digital photometers/detectors. - 3 sets of switching valves for automated start-up and shut down. - Automated switching valve for NOx by cadmium reduction - Full software control, including automatic platen engage and release. - Bids should include consumables required to set up and run instrument (vials, tubing, etc.). - Autosampler compatible and included in price.