Laminar flow purification operating room level distinction
Ⅰ 0.4 / 30min φ90 dish (10 / m3) 5 / cm2 1000 level (local 100 level)
Ⅱ 1.5 / 30min φ90 dish (50 / m3) 5 / cm2 10,000 level
Ⅲ 4 / 30min φ90 dish (150 / m3) 5 / cm2 10,000 level
Ⅲ 4 / 30min φ90 dish (150/m3) 5/cm2 100000 level
IV 5/30minφ90 dish (175/m3) 5/cm2 300000 level
Clean level Applicable types of surgery Room arrangement
100 level (special clean) Valve replacement, heart surgery, organ transplantation, artificial joint replacement, neurosurgery, Operating room
Class 1,000 (standard cleanliness) Ophthalmic surgery, plastic surgery, non-corporeal burns, orthopedics, Class I surgery in general surgery, hepatic, biliary and pancreatic surgery, extracorporeal circulation infusion preparation room
Class 10,000 (general cleanliness) Thoracic surgery, urology, obstetrics and gynecology, otorhinolaryngology, general surgery (except for Class I surgeries), operating rooms, sterile rooms
Class 100 (general cleanliness) Class 100,000 (general cleanliness) outpatient, emergency, infection surgery, whole body burns, corridors, restrooms, anesthesia preparation room.
Level 100,000 (general cleanliness)