Hi Seppy,
You are right that laboratory standard differs from medical electrical equipment standard. Laboratory equipment generally involve the interaction between the end users and the equipment and therefore enclosure leakage can be higher than the medical electrical equipment. The leakage current for centrifuge are generally higher compared to other laboratory equipment. What is most important is to ensure the earth conductor is always intact during maintenance be it corrective or preventive maintenance. In this way risk is reduced.
Regards
