National Institute of Standards & Technology, Acquisition & Assistance Division, Building 301, Room B117, Gaithersburg, MD

66 -- X-RAY MONOLITHIC POLY CAPILLARY LENS SOL 51SBNB6C9260 DUE 090496 POC Keith Kennedy (301) 975-6325/Contracting Officer, Sandra L. Febach (301) 975-6326 The National Institute of Standards and Technology (NIST) modifies the original synopsis/solicitation as it appeared on August 15, 1996, in the following manner: A. at line 19, change from ''distance of not less than 5 mm and not more than 25 mm behind the rear'' to ''distance of between 5 mm and 25 mm behind the rear'' B. at lines 20-22, change from ''The spot size should approach 90% of the radiation within a 40 micrometer diameter, and in any case should exceed 90% of the radiation within a 60 micrometer diameter'' to ''The focal spot should include 90% of the radiation within a 40 micrometer diameter and the maximum acceptable focal spot is 90% of the radiation within a 60 micrometer diameter.'' C. at lines 25-26, change from ''The lens may be enclosed, and the front and rear surfaces protected by x-ray windows which transmit over 90% of the radiation in the energy source above specified.'' to ''The lens may be enclosed, and the front and rear surfaces may be protected by x-ray windows which transmit over 90% of the radiation in the energy range 8-17 kilovolts.'' D. At line 27, change spelling from ''millistearadians'' to ''millisteradians.'' The bid opening date is also changed from August 28, 1996, to September 4, 1996, at 3:00 p.m. All other parts of the original synopsis/solicitation remain unchanged. (0234)

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