Evaluation of Physical Characteristics and Particulate Filtration Efficiency of Surgical Masks used in Iran's Hospitals


Bioaerosols are the most significant risk for exposed people leads to infectious diseases. This study was aimed at evaluation of physical and microscopic characteristics and submicron particulate filtration efficiency of surgical masks used in hospitals throughout Iran. Five types of domestic (Zist Filter, ElhamTeb and Arman masks) and imported (Blosom, Face Masks) surgical masks were tested separately for physical characteristics and submicron particulate filtration efficiency based on Standards AS 4381-1996 and ISIRI 6138. Arman mask had  the  maximum levels  in  fluid  resistance  (112  cm of  water),  pressure  drop  (35±2.58  Pa)  and particulate filtration efficiency (66.5475%±6.14951) and lowest averages of pore diameter (18.7micron).ElhamTeb had the least weight (59.51 2.46 g/m2) and fluid resistance (50.3 cm of water). Zist filter had the least thickness and pressure drop (11 ±1.82 Pa). Blosom had the least particulate filtration efficiency (27.8275 % ±4.44152) and highest averages of pore diameter (425 micron) and fiber diameter (20 micron).The particulate filtration efficiency in the domestic masks (56.130% ±10.07) was more than imported masks (31.906 % ±7.062). Domestic surgical masks have a better quality than imported masks but they cannot satisfy the required level of quality, yet.

Fletcher LA, Noakes CJ, Beggs CB, Sleigh PA. The Importance of Bioaerosols in Hospital Infections and the Potential for Control using Germicidal Ultraviolet Irradiation. Aerobiology Research Group, School of Civil Engineering, University of Leeds, LS2 9JT.

Rhame FS. The inanimate environment Hospital Infections. In: Bennett JV, Brachman PS(Eds). 4st edn. Ed byLippincott-Raven Publishing Co,1998; Chapter 20.

Romney MG. Surgical face masks in the operating theatre: re-examing the evidence. J Hosp Infect 2001; 47: 251-256.

Karen k, leonasCindy R, JonesDawson H. The Relationship Of Fabric Properties And Bacterial Filtration Efficiency For Selected Surgical Face Masks. J Textile &Tech Manage 2003; 3:2.

Mertens R. Methodologies and results of national surveillance. Bail Clin Infect Dis 1996; 3: 159-178.

Wake D, Bowry AC, Crook B, Brown RC. performance of respirator filters and surgical masks against bacterial aerosols. J Aeros Sci 1997; 28: 1311-1329.

Goran TunevallTh. Postoperative wound infections and surgical face masks: A controlled study. J World Surg1991; 15:383-388.

Oberg T, Brosseau LM. Surgical Mask Filter And Fit Performance. Am J Infect Control 2008;36(4): 276-282.

Chen CC, Willeke K. Aerosol Penetration Through Surgical Masks Am J Infect Control 1992; 20(4): 177-184.

Balazy Anna,Toivola Mika, Adhikari Atin, Satheesh SivasubramaniK, Reponen Tiina, Sergey A. Do N95 respirators provide 95%protection level against airborne viruses, and howadequate are surgical masks?. Am J Infect Control 2006; 34:51-57.

Byung Lee, Mikhail Yermakov, Sergey A. Filtering Efficiency of N95- and R95- Type Facepiece Respirators, Dust-Mist Facepiece Respirators, and Surgical masks Operating in unipolary Ionized indoor Air Environments. Aeros & Air Qual Res 2005; 5(3): 27-40.

Micik Rudolph E, Miller Robert L,Leong Arnold C. Studies on Dental Aerobiology: III.Efficacy of Surgical Masks in Protecting Dental Personnel from Airborne Bacterial Particles. J Dental Res 1971; 50: 626.

Tuomi T. Face seal leakage of half masks and surgical masks. J Am Ind Hyg Assoc 1985.46(6): 308-312.

Checchi L, Montevecchi M, Moreschi A, Graziosi F, Taddei P, Violante F. Efficacy Of Three Face Masks In Preventing Inhalation Of Airborne Contaminants In Dental Practice. J Am Dent Assoc 2005; 136: 877-882.

IssueVol 7 No 1 (2015) QRcode
Bio aerosol Surgical mask Particle filtration efficiency Physical characteristics

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SHOKRI A, GOLBABAEI F, SEDDIGH-ZADEH A, BANESHI M-R, ASGARKASHANI N, FAGHIHI-ZARANDI A. Evaluation of Physical Characteristics and Particulate Filtration Efficiency of Surgical Masks used in Iran’s Hospitals. Int J Occup Hyg. 2015;7(1):10-16.