When the job requires work around tiny particles, you and your co-workers will be protected with these lightweight respirators. Adjustable nose clip ensures a more secure seal against the face. At least 95% filtration efficiency when subjected to a 0.3m MMAD Sodium Chloride particle challenge. Suggested for applications such as bagging, sanding and sweeping. Advanced electrostatically charged microfibers designed for ease of breathing. - NIOSH approved for at least 95 percent filtration efficiency against certain non-oil based particles. - Lightweight, disposable particulate respirator is an economical choice for respiratory protection. - Adjustable nose clip and cushioning nose foam reduces potential for eyewear fogging.