DHHS/PHS/FDA/OCGM/Division of Contracts and Procurement Management/Contracts Operations Branch, HFA-512, 5600 Fishers Lane, Park Building, Room 3-32, Rockville, Maryland 20857

66 -- RAY MONITORS WITH IONIZATION CHAMBERS OR EQUAL SOL 221-95-6501 DUE 050195 POC Kimberly Wright, Contract Specialist (301) 443-1555, Susan Gane, Contracting Officer (301) 443-4420. The Food and Drug Administration, Center for Devices and Radiological Health (CDRH) requires X-ray monitors Model 1015 BH with Ionization chambers 10X5-6 and 10X5-180. The monitors must be able to measure exposure, exposure rate, exposure integrated over a single pulse of radiation of 1 ms or greater, and the duration of the pulse. The monitors shall be equipped with one ionization chamber which shall be compatible with the CDRH test stand and shall have an active volume not greater than 8 cc. This chamber shall have a measurement range if 1 mR/min to 650 mR/min and energy dependence less than 7% from M30 (HVL= .36 mm AL HC=14) to the H150 (HVL -17.0 HC = 100). A second chamber shall have a cross sectional area of 100 cm2 and a range of 1 mR/hr to 650 mR/hr. this chamber shall have less than 10% energy dependence from M50 (HVL=1.02 mm ALHC=66) to the H150. The calibration accuracy for both chambers shall be +5% or better. The calibration accuracy for both chambers shall be +5% or better. The monitors and chambers shall be contained within a case no larger than 8 by l0 by 12 and not to exceed 15 pounds. The monitors shall have a digital display and shall be powered by alkaline D cell batteries. The batteries shall have a lifetime for 750 hours of operation. (0074)

Loren Data Corp. http://www.ld.com (SYN# 0383 19950316\66-0002.SOL)