The lifespan of a filter depends, among other things, on the concentration of the contamination and breathing intensity. A change in the smell and/or taste or increasing resistance to breathing indicates the filter needs replacing.
Make sure there is always enough oxygen in the ambient air.
AT LEAST 21.9% OXYGEN!
FILTER CLASSIFICATION according to DIN 3181, part 1 and EN-141 (gases), part 2 (fine dust)
0.1 volume % = 1000 ppm (parts per million)
+ Only for unopened factory packaging.
Even if they are unused and well-sealed, opened filters cannot be
kept for over 6 months.
Used filters are not suitable for another gas.
filter type class (shelf life)filter colour code
filter type class (shelf life) maximum concentration
filter type class (shelf life)protects against
AX (5 years+)brown
AX (5 years+)
AX (5 years+)Organic gasses, vapours and solvents with boiling point under 65°C (and over 65°C).
A1brown
A10.1 vol. %
A1Organic gases. vapours and solvents witha boiling point over 65 °C. (Gas oil, petrol, paint fumes).
A2brown
A20.5 vol. %
A3 (5 years+)brown
A3 (5 years+)1.0 vol. %
B1grey
B10.1 vol. %
B1Inorganic gases and vapours, such as chlorine, sulphur. prussic acid etc.
B2grey
B20.5 vol. %
B3 (4 years+)grey
B3 (4 years+)1.0 vol. %
E1yellow
E10.1 vol. %
E1Sulphur dioxide. hydrochloric acid.
E2yellow
E20.5 vol. %
E3 (3 years+)yellow
E3 (3 years+)1.0 vol. %
K1green
K10.1 vol. %
K1Ammonia.
K2green
K20.5 vol. %
K3 (3 years+)green
K3 (3 years+)1.0 vol. %
P1 (unlimited)white
P1 (unlimited)
P1 (unlimited)Less harmful (inert) suspended fine dust with a MAC value over 10 mg/m³ (Maximum Allowable Concentration).
P2 (unlimited)white
P2 (unlimited)
P2 (unlimited)Harmful fine dust with a MAC value under 0.1 to 10 mg/m³.
P3 (unlimited)white
P3 (unlimited)
P3 (unlimited)Toxic fine dust with a MAC value under 0.1 mg/m³, such as asbestos, carcinogens, spores, bacteria.
THE FOLLOWING FILTERS ARE RARELY USED, BUT CAN BE SUPPLIED
Hgred
Hg
HgMercury gases, 3 years+.
NOblue
NO
NONitrous gases, also nitrogen monoxide, 4 years+.
COblack
CO
COCarbon monoxide.
Reactor SXorange
Reactor SX
Reactor SXReactor filter, radioactive iodine, iodomethane, dichloromethane.