National Institute of Standards and Technology, Acquisition and Assistance Division, Bldg. 301, Room B117, Gaithersburg, MD 20899

66 -- CRYOGENIC RADIOMETER SYSTEM SOL 52SBNB5C8744 DUE 071295 POC Debra Hoffman (301) 975-4648/C.O Pauline Mallgrave (301) 975-6330 The National Institute of Standards and Technology (NIST), Gaithersburg, MD intends to purchase a cryogenic, electrical substitution radiometer system for use in measuring radiant power levels of approximately 100 nW to 100 uW in the spectral range from approximately 200 nm through 2 um. The system will be used in a NIST-provided ultrahigh vacuum chamber to accurately measure monochromatized radiation generated by an electron storage ring and dispersed by a vacuum monochromator. The system shall be capable of measuring input irradiation levels of 1 to 100 uW with absolute uncertainty of no greater than 0.05% (one standard deviation) over the indicated spectral range. The base period of the contract shall consist of design of the required radiometer system and shall last no longer than sixty (60) days commencing with acceptance of the contract. The option period shall consist of the construction, assembly, testing, and delivery of the operating radiometer system as designed in the base period and shall last no longer than 120 days from the time the option is exercised. Additionally, NIST shall have a period of sixty (60) days for test and evaluation prior to final acceptance. The award of a firm, fixed-price contract is anticipated. All responsible sources may submit a proposal which shall be considered by the agency. Please request copies of the solicitation in writing. (0143)

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