Operating room air purification air cleanliness level of dust concentration measurement. Cleanliness requirements of high dust concentration is lower, the higher the contrast. Clean air operating room operating room air cleanliness of not less than 10. Per cubic meter is greater than or equal to 0.5 microns how much dust in the air ions, warranty clean operating room, operating room can be divided into 100, 1000 clean, clean operating room index, 10000, Zhoushan clean operating rooms, 100,000 species. The higher the number, cost, clean operation room purification lower levels. Gravity is suspended particulates. Sample flow rate was adjusted to 0.00039 1113 / S, based on the level of decontamination sampling time is set to clean the area range from 10 minutes to several hours, the impactor on pre-selected sampling point and start it. After cleaning plant sampling period, the impact may be moved to another location, then the number of measurement samples. Macroscopic particle concentration is defined as the total weight in each of the corresponding grade level or amount is in addition to the particles by the collision of the total gas flow. Select Ecota purification (Figure), sterile operating room clean, clean operating room by the Shandong Zhoushan provide decontamination Ltd. Yick Tak. Shandong Yick Tak decontamination Ltd. (www.shandongyide.cn) located Jingshi Road, Jinan City, Shandong Province, No. 16351. Scraps and development in the wave of market economy, the current Shandong Ecota purification has a high profile in the engineering construction, enjoys a good reputation. Shandong Ecota purify the whole network business alliance to achieve certification, marking our service and management level has reached a new height. Shandong Ecota purify the staff willing to work with all people of insight and common development, for a better future.