When working in environments where dust is present, it is important to understand the different types of dust and how they are categorised by particle size. This helps in selecting the appropriate respiratory protection.

Dust is typically classified as follows:

• Dust: Particles larger than 5 microns (µm)
• Fine dust: Particles between 5 µm and 2 µm
• Very fine dust: Particles smaller than 2 µm

Air quality monitors often report PM10 and PM2.5 values. These refer to Particulate Matter with diameters of 10 µm and 2.5 µm, respectively, which correspond to fine and very fine dust.

When choosing a disposable dust mask for protection, the following should be used:

• FFP1 masks for larger dust particles (above 5 µm)
• FFP2 masks for fine dust (5–2 µm)
• FFP3 masks for very fine dust (below 2 µm)

Understanding these classifications ensures that the appropriate level of respiratory protection is used for the specific dust hazard.

Watch this video for more information on silica dust exposure:

Source: Worksafe BC

Key points:

• Dust classification is based on particle size.
• PM10 = particles up to 10 µm, PM2.5 = particles up to 2.5 µm.
• Dust >5 µm = general dust; 5–2 µm = fine dust; <2 µm = very fine dust.
• Use FFP1 for dust, FFP2 for fine dust, FFP3 for very fine dust.
• Selecting the correct mask helps ensure effective respiratory protection.

If you need further support, please contact our Technical Support Team using the email: technical@jspsafety.com or contact us via our WhatsApp.