Clean operating room grade: grade surgical name applies a special clean operating room surgical contents burns, joint replacements, organ transplants, neurosurgery, ophthalmology and cardiac surgery and other cosmetic surgery two clean operating room sterile surgical thoracic surgery, orthopedics, urology surgery, hepatobiliary and pancreatic surgery and orthopedic surgery and general surgery oocyte in a class three general clean operating room sterile surgery General Surgery, (excluding a class of surgery), gynecology surgery four quasi-clean operating rooms and anorectal surgery Level Standard pollution class and other surgical operating room :( empty state or static) maximum concentration at the surface level of the operating room name sedimentation method (flotation method) Bacterial contamination maximum density (number / cm2) air cleanliness level of the surgical area surrounding region the surgical area the surrounding area a special clean operating rooms 0.2 / 30 φ90 dish (5 / cubic meters) 0.4 / 30 φ90 dish (10 / cubic meters) 5. 100 1000 two clean operating room 0.75 / 30 φ90 dish (25 / Cube) 1.5 / 30 φ90 dish (50 / cubic meters) 5. 1000 10000 three general clean operating rooms 2/30 φ90 dish (75 / Cube) 4/30 φ90 dish (150 / cubic meters) 5. 10000 100000 four quasi-clean operating rooms 5/30 φ90 dish (175 / cubic meters) 5. 300,000. Which purification operating room operating room decontamination | operating room purification | Hebei Hebei Ericsson Ericsson is provided by medical Engineering Co. Ericsson Hebei Medical Engineering Co., Ltd. (www.hslixin.com) strong, credible, Hengshui in Hebei medical device manufacturing equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hebei Ericsson and you hand into the brilliant, for a better future!