SELF-CALIBRATING USING A PERMANENT CALIBRATION CHIP ON TEST STRIP TABLE; AUTOMATIC FEED TABLE; RESULTS IN LESS THAN A MINUTE; PRINTED RESULTS TIME AND DATE STAMPED; ABNORMAL RESULTS HIGHLIGHTED; AUDIBLE ALARM FOR ERRORS; LCD DISPLAY WITH ON-SCREEN OPERATOR PROMPTS; UPGRADEABLE SOFTWARE FOR FUTURE PRODUCT DEVELOPMENT; AMBIENT OPERATING TEMPERATURE 18 TO 30 DEG. C; AMBIENT OPERATING HUMDITY RANGE 20 TO 85 PCT; 240 VAC