The statutory framework conditions for different dust classes apply. These are described in the international standard IEC 60 335-2-69, which divides dust into three different dust classes, L, M and H.
Dust class L:
Common and non-hazardous dust, e.g. household dust, and common and non-hazardous materials, e.g. soil.
Dust Class M:
All wood dust as well as dust from putty, fillers and varnishes, gypsum, cement, concrete, tile adhesive and paints such as latex and oil paints, or materials containing quartz such as sand and pebbles.
Dust Class H:
Dust with cancer-causing and disease-causing particles, as well as dust with fungal spores, asbestos, mineral fibers, asphalt, and man-made mineral fibers such as glass wool.
What exactly does this mean then?
For all noxious dusts, there are fixed workplace limits (AGW) in mg/m3 of air for all dust classes. This standard divides dust into three classes: L, M and H. The workplace limit value (AGW) sets the maximum concentration of dust in the air breathed at which no health problems can be expected even when working for prolonged periods (eight hours a day, five days a week). The lower the AGW in mg/m3 in the air, the more dangerous the dust and the higher the health hazard.
Design Approval | Filtration System Degree | Fitness |
Dust Class L1)
| >99% | Health hazardous dust with limits3) > 1 mg/m3 |
M1 dust class)
| >99,9% | Health hazardous dust with limit values3) > 0.1 mg/m3 |
Dust Class H1)
| >99,995% | Health hazardous dust with limit values3) <= 0,1 mg/m3 | Dust type B222) | depending on dust class | flammable dust of explosion hazard class ST1, ST2 and ST3 in zone 22 |
Now just choose the size of the container, the necessary vacuum-cleaner-accessories and you can start vacuuming.