Multi-user Gamma Counter, with 500 sample capacity, 10-800keV, digitally adjustable linear amplification with two count channels, preset time from 1-9999 seconds in 1 second increments, automatic background subtraction for two channels, 1 sample measuring position, automatic printout of sample number and patient number, crosstalk correction, several program modes and calculation methods available to use, user selectable printout format, 40 character alphanumeric display, exterior dimensions are 20x44x22in.