0
Item(s)
Checkout

GB Mainland Delivery just £4.50.
FREE Delivery over £50 exc VAT 01842 765 634

Protection Levels of Gas 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 50 hours.