What are L, M and H devices?
The employers' liability insurance associations and the statutory accident insurer use their own classification systems for dust removal machines (vacuum cleaners/dust collectors) that are usually used at mobile application sites (e.g. in the construction industry).
Dust removal machines of dust class L may only be used for slightly hazardous dusts, for example gypsum, sugar or grain dusts and for work thresholds of 1 mg/m³.
The dust class M is used for moderately hazardous dusts, for example wood, paint, plastic, metal, fibre, soot, quartz, mineral dusts and for work thresholds of ≥ 0.1mg/m³.
Dust class H applies to dusts that are assumed to be highly hazardous, for example chrome/nickel/cobalt, asbestos fibre (with special examination), glass fibre, bio-materials (mould), flour dusts and for work thresholds of 0.1mg/m³.
Checks involve the use of polydisperse chalk dust with a grain size distribution of 10% of 1 µm, 22% of 2 µm, 75% of 5 µm (analogue to DIN EN 60335-2-69:2015-07, AA.22201.3). [DGUV 309-012]
aeropur filters are not tested to this norm, but can be directly compared with the norms ISO 16890 and EN 1822 that we use as a minimum requirement. Our specialist on site will be happy to advise you.
General questions about mobile dust collectors
- How loud are the dust collectors?
- How much power do dust collectors use?
- How long are delivery times?
- How frequently do the filters need to be changed?
- What are the tasks of the pre-filter and the main filter in the dust collectors?
- Can I change the filters of the mobile dust collectors myself?
- How do I know which filter needs to be changed?
- What filters are suitable for me?
- What do the exhaust air filters do?
- What norms apply to air filters?
- Do the filters differ from one another?
- Can I use non-original filters in the device?
- Can aeropur devices also filter gases?
- Can aeropur devices also filter biological substances?
- Do I need E11 or H13 filters?
- Why are only disposable filters used for dust collection?
- What are L, M and H devices?
- Is particulate matter actually a hazardous substance?
- Where should dust collectors be positioned in the room?
- What volume of space can an aeropur filter?
- How can particles from a greater distance be captured?
- Where are aeropur dust collectors used?
- What are grey rooms?
- What are clean rooms?