PORTEC by F. Stephan GmbH is a robust portable anesthesia system for practically all tasks which stands out on account of its ergonomic, functional design as well as its unique variability. PORTEC is extremely robust and can be extended by adding further modular elements without any problems. This is a proven concept which when combined with the oxygen generator STAXEL even permits fully autonomous operation, including its own oxygen and compressed air supply. Thus the system can be used in regions and crisis/disaster areas with poor infrastructure. The modular structure of the anesthesia system permits exact customized configuration. And so PORTEC can be adapted perfectly to all possible tasks. The PORTEC anesthesia system can be ideally supplemented by adding the ABV-U ventilator with a large number of ventilation possibilities and safe monitoring of stenosis, disconnection and power failure. The NGM 1000 anesthetic gas monitor and and O2 monitor with adjustable alarm limits are other practically indispensable components for optimum patient care.