Class-1 threaded filters
Class-1 threaded filters

The CE aproval is suspended, production only upon request!

General features:

The Respirator's class-1, EN threaded filter cartridges have metal housing made of aluminium alloy. Their inner structure consists of two different parts:
  • Activated carbon which removes the contaminating gases and vapours from the inhaled air in physical and/or chemical way.
  • Filtering part made of particular quality paper by folding. This removes the solid or liquid contaminating particles from the inhaled air.
Gas filters contains only the first layer, particle filters only the second one and combined filters contain both.

Limitations of use

The filter cartridges can be used if the concentration of the contaminants in the air is not higher than 1000 ppm (0,1 v%) and the oxygen content of the air is 17 v% minimum. The filter cartridges may not be used if the contamination present causes immediate death or permanent injury of health (IDLH).


All types are furnished with colour labels according to the standard as shown by the table attached.

Gass filters    
Against solvents, organic gases and vapours with a boiling point > 65°C A1
Against inorganic gases and vapours B1
Against acidic gases and vapours E1
Against ammonia and amine derivatives K1
Against organic and inorganic gases and vapours A1B1
Against organic and inorganic, acidic gases and vapours as well as ammonia A1B1E1K1
Particle filters    
Against poisonous, airborne, solid and liquid particles, bacteria and viruses. P3 R
Combined filters    
Against as A1 and P3 together A1P3 RD
Against as B1 and P3 together B1P3 RD
Against as E1 and P3 together E1P3 RD
Against as K1 and P3 together K1P3 RD
Against as AB1 and P3 together A1B1P3 RD
Against as ABEK1 and P3 together A1B1E1K1P3 RD


The technical parameters of the filters comply with the provisions the EN 141, EN 143, EN 148-1 standards.

Technical parameters

  • Combined filters: 240 gramm
  • Gas filters: 210 gramm
  • Particle filters: 110 gramm
Légzési ellenállás 30 liter/perc mellett:
  • Combined filters: < 180 Pa
  • Gas filters: < 95 Pa
  • Particle filters: < 110 Pa

Threaded connectiont:

40 x 1/7" cord thread, according to EN 148-1