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Welding fumes - General information 

What are welding fumes actually? And what is it that makes welding fumes so dangerous?

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Composition and ingredients of welding fumes 

The composition of welding fumes and the number of pollutants depend on the welding process and the material composition.

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Size of different particles in welding smoke 

Almost all particles in the welding dust are smaller than 1 µm (= 0.001 mm)

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Physical effects by absorbing the pollutants 

The occurring pollutants have to be distinguished into three types with regards to which effects their absorption may have.

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W3 - new ISO 21904 features 

The international standard for the testing of welding fume filtering devices describes the requirements placed on devices with regard to operability, detection and separation efficiency.

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