A na-eji akwa polyester nwere okpukpu abụọ rụọ Cleanroom Swab nke na-enweghị ihe ndị na-emerụ emerụ dị ka silicone, amides ma ọ bụ
phthalate esters.
A na-ejikọta akwa ahụ nke ọma na njikwa ahụ, si otú a na-ewepụ iji ihe nkpuchi ma ọ bụ mkpuchi na-emerụ emerụ.