Ikizamini cyo gukumira Dolomiteni ikizamini cy'ubushake muri Euro EN 149:2001+A1:2009.
Iyo mask ishyirwa ku mukungugu wa dolomite ungana na 0.7 ~ 12μm kandi ivumbi rigera kuri 400 ± 100mg / m3. Hanyuma ivumbi rinyuzwa muri mask ku muvuduko wo guhumeka wa litiro 2 ku gihe. Ikizamini gikomeza kugeza igihe ivumbi ryirundanyije kuri buri gipimo rigera kuri 833mg · h / m3 cyangwa ubushobozi bwo guhangana bugeze ku gipimo cyagenwe.
Itsindakuyungurura no kurwanya guhumeka kwa maskhanyuma byapimwe.
Udupfukamunwa twose dutsinda ikizamini cyo gukumira dolomite dushobora kwerekana ko ubushobozi bwo guhumeka bw'udupfukamunwa mu buryo nyabwo bwiyongera buhoro buhoro bitewe no kuziba ivumbi, bityo bigatuma abakoresha bumva bambaye neza kandi bakamara igihe kirekire bakoresha ibicuruzwa byabo.
Igihe cyo kohereza: Werurwe-29-2023