Product Description Designed for the medium to larger size clinical or research laboratory, these units have a number of unique features. Detectors Well-type, NaI(tl) crystal(s) coupled to high gain photomultiplier tube(s). Contains removable plastic liner(s). Greater than 80% efficiency for I125 and Co57. Background Less than 45 cpm for I125 window Isotopes I125, Co57, I125/Co57, plus user programmable windows up to 1000 KEV. Simultaneous counting of dual isotopes. ADC 4096 channel analyzer for extremely accurate calibration and counting. Live real-time isotope spectrum display. Data Reduction All RIA, IRMA, Ratio and screening assays may be performed. Curve fits include: Point-to-Point, Straight Line, Weighted Straight Line ,Cubic Spline and Four Parameter Logistic. Calibration Automatic detector high voltage calibration. Display Backlit LCD (4.5 inch diagonal) for graphical display of curves, L-J Charts, Isotope spectra, etc. Software Menu-driven, easy to use software integrates the display and alpha numeric keypad. Dimensions 20 inches width x 13.5 inches depth x 10.5 inches height Weight 88-92 lb. (depending on the number of detectors)