P1 R protection against solid and liquid particles for use with filters for gases and vapours 3 M 6000 series™ (requires a retainer 501) can be used with any half mask or mask reusable full 3 m™ connection type bayonet designed for optimize visual field help to work safely in hazardous areas series 5911 particulate filters 3M™ be used with filters for gases and vapours 3M™ 6000 series to add protection against gases and particles (in conjunction with a retainer Dor 501 filters), and are designed to optimize the field of view.Our filters are lightweight and feature a bayonet connection.If you need protection against solid and liquid particles flexible R P1, use 3M™ 5911 particle filter, which adds protection against particles to use with the filter for gases and vapours 3 M™ Series 6000 (filters 3 M™ 501 retainer required).Our filters li.