The Bayer 865 Blood Gas System with the CO-ox module is used for the determination of pH, pCO2 and pO2, glucose, tHb, Na+, K+, Ca++, Cl-, FO2HB, FHHb, FMetHb, and FCOHb. Calculated parameters for the Bayer 865 include standard or actual bicarbonate (HCO3), total carbon dioxide (tCO2), base excess of blood [BE(B)] and of extracellular fluid [BE(ecf)], base excess in vivo or in vitro (BEvv or BEvt), estimated Oxygen saturation (O2 sat), estimated Oxygen content (O2 CT), temperature corrected pH, temperature corrected pCO2, temperature correct O2, temperature corrected alveolar-arterial oxygen tension difference, temperature corrected arterial-alveolar oxygen tension ration, temperature corrected respiratory index, Hematocrit, Sulfhemoglobin concentrations greater that 1.5%, Hemoglobin Oxygen saturation, Oxygen content of Hemoglobin, Oxygen capacity of Hemoglobin, and partial pressure of Oxygen. Features of the Bayer 865 Blood Gas System include fully automated sample delivery, plus automated sample entry, easy analysis of sample types and devices with small sample size, easy to use, menu-driven software and on-screen prompts. Software is customizable to meet your laboratory requirements. The 865 has automatic calibration at intervals that you select, QC ranges, patient reference ranges, printing options that you can customize, flags for results that fall outside expected ranges and the capacity to store 1500 patient sample reports. The Bayer 865 Blood Gas System has all measured parameters for one months QC data displayed on the screen, quality control tracking, reduced number of system parts and system complexity, waste system designed for bio-safety, automatic, reagent-path cleaning cycle, advanced on-board data management, archive and backup capabilities, and on-board roll printer with paper take-up spool