Medical technology, anaesthesia, anaesthesia units, anaesthesia machines, portable anaesthesia units, anaesthesia working place, anaesthesia records, anaesthesia ventilators, ventilators, respiration, monitors, patient monitoring, oxygen monitors, volume monitors, gas monitors, blood pressure monitors, pulse oximeters, measurement technology, measuring technology, calibration, ventilator tester, technical equipment management, testing equipment, functional testing equipment, Xenon anaesthesia