Prefilter Should Always Be Used For Particle, Gas And Combined Filters.Sundstrom SR221 Pre Filter The pre-filter protects the main filter against premature clogging by larger particles.The Sundstrom SR221 Pre Filter should always be used for particle, gas and combined filters.Code H02-0312
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The Sundstrom P3 Particle filter SR 510 P3R is a mechanical filter with extremely low inhalation resistance. The SR 510 protects against all types of particles (dust, fume, fog, spray, asbestos), even bacteria, viruses, and radioactive pollution & can be combined with other Sundström filter respirator products for combinations filter protection. CODE H02-1312 :
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