Sardyoung, P., Intra, P. , Lawong, T. and Rattanachan, W. 2025. Effects of residual particles and multiply charged particles of a polystyrene latex particle on the particle filtration efficiency of a medical face masks. Engineering and Technology Horizons . 42, 1 (Mar. 2025), 420103. DOI:https://doi.org/10.55003/ETH.420103.