
Microbial identification and antimicrobial susceptibility testing instruments (e.g., VITEK, Phoenix systems) must comply with GB 9706.1, YY 0505 (domestic), and IEC 60601-1-2 (international) EMC standards. They monitor microbial growth through turbidimetric, fluorescence, or biochemical reactions, and include units for isothermal incubation, optical detection, and mechanical transfer. Standards require that temperature uniformity and stability during long-term (several hours to tens of hours) incubation processes be unaffected by electromagnetic interference, that optical readings have low background noise, and that mechanical transfer positioning be accurate to ensure the reliability of identification and antimicrobial susceptibility results.