例如， filtering facepiece respirators (FFRs)
For non-powered air-purifying respirators (APRs)
N系列 过滤器 must only be used for protection from non-oil aerosols. N系列 过滤器 must be replaced whenever damaged, soiled, or causing 不iceably increased breathing resistance.
P系列 过滤器可 used when either oil or non-oil aerosols are present
Manufacturer replacement schedules for P系列 过滤器 在油气溶胶的存在 vary widely, from as short as 8 hours to 40 hours or more. Unless you know the manufacturer’s replacement recommendation, replace P系列 particulate 过滤器 after a single work shift (up to 8 hours of continuous or intermittent use) when oil is present.
当油 不 present, P系列 particulate 过滤器 may be re-used if not damaged, soiled, or causing 不iceably increased breathing resistance.
For powered air-purifying respirators (PAPRs), particulate filters are rated High Efficiency (bottom right). When a PAPR with a particulate filter is required, the pesticide label will specify this by the acronym “HE.” Change PAPR 过滤器 whenever they are