The stringent bio safety levels that are required for BSL 3 and BSL 4 facilities are met by the specially designed BSL autoclaves belonging to the Tuttnauer range. A barrier that is hermetically sealed, level zones with different risks and efficient disposal and sterilization of gases and effluents are some of the features that are included. Special design considerations for the autoclave include piping and autoclave components, BIO-shield, sterilization of the filter, expansion vessels and safety valves.