Filters for solder fume extraction

The quality of an extraction system depends mainly on the filters used. Modern filter units combine several stages to capture both particles and gases.

Why is one filter not enough?

Solder smoke contains both solid particles and gaseous substances – no single filter captures both.

Pre-filter

Catches coarse particles and dust, protecting the finer, more expensive filter stages.

HEPA filter

Captures very fine airborne particles with high efficiency – the core stage of particle filtration.

Activated carbon filter

Binds gaseous substances and odours that a HEPA filter lets through.

Multi-stage filtration

The combination of pre-filter, HEPA and activated carbon captures the whole range of solder smoke.

When to change the filters?

Once saturated – shown by falling airflow, odour or a filter indicator. Intervals depend on use and flux.

The most common mistake

Delaying the filter change – a saturated filter loses its effect and the system no longer protects.

Conclusion

Good filters are the heart of extraction. The article how extraction works shows the system; browse the range under fume extraction.