(1) Technical Parameters: 1. Direct measurement by ion selective electrode. ★2. Thorough gas-liquid segmented controlled by electromagnetic valve, simple tubing, not easy to clog. 3. Automatic tracking of electrode status, eliminating electrode drift issues. ★4. Transparent electrode, easier to observe. 5. Dual-parameter calibration, more accurate sample measurement. 6. Special quality control testing and quality control statistical functions, easy to use. 7. Dedicated reagents can measure total calcium and ionized calcium. 8. Low reagent consumption, lower testing costs. 9. Test items: K , , Cl-, Ca , pH. 10. Measurement method: Direct method of ion selective electrode (ISE). 11. Sample types: Whole blood, plasma,. 12. Sample volume: 100uL. 13. Flushing method: Rapid gas-liquid segmented flushing through electromagnetic valve, thorough of electrode tubing, not easy to clog. 14. Measurement time: No more than 1 minute (depending on the balance time of measurement, including, flushing, and printing). 15. Display: Large screen, full Chinese display, human-machine dialogue. 16. Printer: Built-in high-speed lowise thermal printer. 17. Interface: Standard RS232 interface, can connect to central computer. 18. Environmental temperature: 5℃～0℃, relative humidity: ≤85%. 19. Power requirements: ~220V±22V, 50Hz±Hz. 20. Continuous operation for 24 hours, with self-diagnosis function, can perform sample tests at any time. 21. Single/dual automatic calibration, and can process quality control data.