Naval Research Laboratory, 4555 Overlook Ave., S.W., Washington, D.C. 20375-5326

66 -- INSTRUMENTS AND LABORATORY EQUIPMENT SOL N00014-96-R-LS08 POC Lisa Bridgan, Contract Specialist, Code 3230.LS (202) 767-3739 Helen Paul, Contracting Officer, Code 3230.HB (202) 767-3739. The Specifications previously provided in the the combined synopsis/solicitation for commercial items in the 15 August 1996 issue of the Commerce Business Daily is hereby revised as follows: The Contractor shall provide a high performance UV/VIS/NIR double beam spectrometer with double monochrometer and reference beam attenuation, 1 each that meets or exceeds the following specifications: The optical unit shall include a large interchangeable sample compartment and detector module, and monochrometers with holographic gratings in Littrow configuration with 1440 L/mm for the UV/VIS range and 360 L/mm for the NIR range. The spectrometer must have a side on photomultiplier with especially high sensitivity for the UV range and a high performance thermostatted PbS cell for the NIR range with automatic detector switching. The spectrometer must accurately measure material properties in the following wavelength range: .185 - 3.3 microns (and be expandable to .175 microns with a nitrogen purge). The instrument must have bandpass of .05 - to 5.0 nm in .1 nm increments in the UV/VIS range and .2 - 20 nm in .04 nm increments in the NIR range. The spectrometer must provide scan speeds of .1 to 2400 nm in the UV/VIS range and up to 9600 nm/min. in the NIR range. Stray light must not exceed .00008%T @ 220, 340, and 370 nm. measured according to ASTM E-387. Noise levels must not exceed: .000050 A RMS @ 500 nm, 0A, .000160 A RMS @ 500 nm, 1A, .000300 A RMS @ 500 nm,. 2A, 001000 A RMS @ 500 nm, 4A, .001000 A RMS @ 190 nm, 0A. The spectrometer must contain an optical system that includes a large interchangeable 150 mm integrating sphere, a motorized sample and reference beam attenuator, prealigned tungsten-halogen and deuterium lamps (with lifetime counter) and automatic source change. The contractor shall provide operative software for the spectrometer. The software must provide recording, manipulation and storage of spectral data and complete control of instruments and accessories. The synopsis/solicitation closing date is hereby extended from 03 September 1996 to 05 September 1996. All of the other terms and conditions previously stated remain unchanged. **** (0236)

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