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  • 3M Masks
  • Moldex Half Masks
FFP1, FFP2 and FFP3
FFP1: 4 x Workplace Exposure Limit
FFP2: 10 x Workplace Exposure Limit
FFP3: 20 x Workplace Exposure Limit
Gas & Vapour Filters

Protection level

Colour

Hazard types

Examples

Maximum use level

A1

Organic gases and vapours,
boiling point > 65°C

Working with solvents created by
varnish, paints and adhesives

10 x WEL [half mask] 20 x WEL [full face mask] or 1000 ppm whichever is lower

A2

As A1

As A1 but to higher concentrations

10 x WEL [half mask]
20 x WEL [full face mask]
or 5000 ppm whichever is lower

A1B1E1

As A1+ inorganic gases and vapours + acid gases

As A1 + working with chlorine, bromine, hydrogen cyanide, hydrogen sulphide, hydrochloric acid and other acid gases

10 x WEL [half mask]
20 x WEL [full face mask]
or 1000 ppm whichever is lower

A1B1E1K1

As A1B1E1 + ammonia

As A1B1E1 + working with ammonia

10 x WEL [half mask]
20 x WEL [full face mask]
or 1000 ppm whichever is lower

A2B2E1

As A1B1E1

As A1B1E1 but to higher concentrations

10 x WEL [half mask]
20 x WEL [full face mask]
or 5000 ppm (A + B),
1000 ppm (E) whichever is lower

AX

Organic vapours boiling point ≤ 65°C

Working with low-boiling vapours e.g. acetone, dichloromethane

For single use only
National legislation may limit maximum usage levels.

Hg P3

Mercury

Working with mercury vapours

Maximum use time against mercury 50h