What are the domestic and international EMC (electromagnetic compatibility) standards for electrolyte analyzers?

Electrolyte analyzers (used to detect K+, Na+, Cl-, Ca2+, etc.) must meet GB 9706.1, YY 0505 (domestic), and IEC 60601-1-2 (international) EMC standards. They typically employ the ion-selective electrode (ISE) method to measure the potential difference (in the mV range) between the electrode and the reference electrode. The standards require that this minute potential difference measurement be highly stable, unaffected by internal fluid pumps, valve movements, or electromagnetic interference from external environments (e.g., switching on/off fluorescent lights, nearby equipment), to ensure the accuracy of electrolyte concentration results, which is crucial for the monitoring of critically ill patients.