What is dust?

Dust consists of fine, solid particles distributed in theair that are caused by mechanical machining (milling orsurface machining) or by the swirling up of deposits (e.g.by blowing off dust with pressurised air or dry sweepingusing a broom). Fumes are also considered as dust. Theyare formed as a result of chemical or thermal processes(e.g. welding) and also consist of fine solid particlesdistributed in the air.Dust particles either float or fall through the air dependingon the size of the grains. If the particles are verysmall (such as with metal dust), the dust can stay in theair for a very long time. The larger the particles, the lessthey float and the faster they fall.

Behavior of dust in the air

OSHA Limit Values

The danger of inhaling dust particles damaging thelungs (trachea, bronchi), depends on the concentration,size, shape and toxicity of dust. Much emphasis today isplaced on health protection and occupational safety. Thisis reflected worldwide in laws and regulations.There are two categories of dust: the inhalable and therespirable fraction.Inhalable dust relates to the amount of dust that entersthrough the mouth and nose.Respirable dust refers to the proportion of the fine dustthat can reach the pulmonary alveoli due to its smallparticle sizeWith OSHA Law and regulations, the Occupational Safetyand Health Administration in the US Department of Laborrequires employers to take measures reducingthe occupational exposure limit.

Clean air at work

In modern production processes, the extraction of chips,dust and fumes plays a particularly crucial role. Cleanlinessat the workplace is not only a requirement, it alsoensures higher quality products, fewer rejects, longer machinerunning times and especially healthier employees.

ESTA Filtration Efficiency

Minimum Efficiency Reporting Value (MERV) Rating

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