Choose the Right Filter Cartridge for Your Air Purifying Respirator


How do you know which filter cartridge is right for your application?

 

There is a wide range of potential industries and respiratory applications that require specific filter cartridges. Before you begin a project, you need to identify the work environment. Does it contain a particulate, gas and/or vapor hazard? Using the right respirator filter and cartridge is just as important as using the right respirator.

  • Filters are made of materials designed to trap particulates such as dust and fibers.
  • Cartridges contain material that absorbs gases and vapors such as fumes, smoke, chemicals and organic vapors.

NOISH (The National Institute of Occupational Safety and Health) created an air filtration rating and classification system for filters - what do the ratings mean?

Filters are rated with a number: 95, 99 or 100.  This means when used properly they are capable of filtering at least 95%, 99% or 99.97% of airborne particulates.

What do the classification letters N, R and P mean?

  • N class filters are not resistant to oil. 
  • R class filters are oil-resistant, but they may only be used against oily mists for up to eight hours (or as instructed by the manufacturer)
  • P class filters are considered oil-proof.  P class filters will have a time-use limitation determined by the manufacturer so always read the entire product label and instructions carefully!

RESPIRATOR CLASS & RATING:

MINIMUM FILTER EFFICIENCY LEVEL:

N95, R95, P95

95%

N99, R99, P99

99%

N100, R100, P100

99.97%


Particulate filters are NIOSH (National Institute of Occupational Safety and Health) rated with a NUMBER & LETTER.  

 

What does the NUMBER mean?

 

Filters are rated 95, 99 or 100.

This means when used properly, they are capable of filtering at least 95%, 99% or 99.97% of airborne particles.

 

What does the LETTER mean?

 

N-class filters are not resistant to oil. 

R-class filters are oil-resistant, but they may only be used against oily mists for up to eight hours. 

P-class filters are oil-proof; time-use limitations must be determined by the manufacturer.

CARTRIDGES are NIOSH (National Institute of Occupational Safety and Health) rated with a COLOR CODE.  

Filters only:

MAGENTA – P100 PARTICULATE FILTER (99.97% minimum filter efficiency)

Cartridge & Filter Combination:

OLIVE & MAGENTA - Organic Vapor, Ammonia, Methylamine, Formaldehyde, Acid Gas Cartridge & P100 Filter

BLACK & MAGENTA - Organic Vapor Cartridge & P100 Filter

WHITE & MAGENTA - Acid Gas and Formaldehyde Cartridge & P100 Filter

YELLOW & MAGENTA - Organic Vapor and Acid Gas Cartridge & P100 Filter

GREEN & MAGENTA - Ammonia and Methylamine Cartridge & P100 Filter

OLIVE & MAGENTA - Mercury Vapor and Chlorine Cartridge & P100 Filter

 

Cartridges only:

OLIVE - Organic Vapor, Ammonia, Methylamine, Formaldehyde and Acid Gas

BLACK - Organic Vapor Cartridge

WHITE - Acid Gas and Formaldehyde Cartridge

YELLOW - Organic Vapor and Acid Gas Cartridge

GREEN - Ammonia and Methylamine Cartridge

OLIVE - Mercury Vapor and Chlorine Cartridge

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