In this study, we evaluated the filtering effect of the fine dust mask. Our objective research has secured credibility in the private sector. The performance of domestic fine dust masks is evaluated by three dust collection efficiencies, inspiratory resistance, and leakage rate according to KF grade in the health mask standard guidelines issued by the Ministry of Food and Drug Safety. Based on this, eight types of fine dust masks were evaluated for dust collection efficiency and face intake resistance. All masks showed good performance as the collection efficiency was 90%. The higher the KF grade, the higher the collection efficiency, but the inspiratory resistance had no correlation with the grade. According to the manufacturer's operation method, masks below the standard value may be distributed. Masks that are currently on the market have shown results that can be trusted. However, we hope that the system will be improved to validate whether the masks that meet the threshold are still being distributed.

Abstract
1. Introduction
2. Research methodology
    2.1 Experimental analysis mask
    2.2 Aerosol for experimental analysis
    2.3 Experimental analysis test equipment
    2.4 Test method for dust collection efficiency of mask
    2.5. Experimental method of face intake resistance ofmask
3. Evaluation method and experiment result
    3.1 Evaluation method
    3.2 Dust collection efficiency
    3.3 Facial Intake Resistance
4. Review and discussion
5. Conclusion
References

• 권우택(을지대학교 보건환경안전학과) | Woo-Taeg Kwon (Department of Environmental Health and Safety, Eulji University)
• 정민재(을지대학교 보건환경안전학과) | Min-Jae Jung (Department of Environmental Health and Safety, Eulji University)
• 김범수(을지대학교 보건환경안전학과) | Bum-Soo Kim (Department of Environmental Health and Safety, Eulji University)
• 이우식(가천대학교 화공생명공학과) | Woo-Sik Lee (Department of Chemical & Biological Engineering, Gachon University)
• 권이승(가톨릭관동대학교 의료경영학과) | Lee-Seung Kwon (Department of Medical Management, Catholic Kwandong University) Corresponding author