Igicuruzwa kirakoreshwa mubipimo byipimisha EN149: ibikoresho birinda ubuhumekero-byungurujwe birwanya igice cya mask; Guhuza ibipimo: BS EN149: 2001 + A1: 2009 Igikoresho cyo gukingira ubuhumekero-cyungurujwe cyo kurwanya anti-particle igice cya mask gisabwa ikimenyetso cya 8.10 cyo guhagarika ikizamini, EN143 7.13 nibindi bipimo.
Guhagarika ihame ryikizamini: ikizamini cyo guhagarika akayunguruzo hamwe na mask ikoreshwa mugupima ingano yumukungugu wakusanyirijwe muyungurura, kurwanya ubuhumekero bwikigereranyo cyikizamini hamwe no kuyungurura (permeability) mugihe umwuka utembera unyuze muyungurura unyweye muri runaka ibidukikije byumukungugu kandi bigera kumurwanya runaka wubuhumekero.