Lessons Learned: Soldering Exposure

November 13, 2025

What Happened

A researcher was soldering on an open bench for extended periods of time over two days. The work was quite small and included soldering many wires to connectors.

The researcher was exposed to soldering fumes resulting in irritation to the respiratory system. Symptoms experienced included watery eyes, coughing, chest tightness and dry nose & throat.

What went right?

  • Disposable gloves were worn at the time of the incident.

  • The researcher sought medical assessment upon onset of symptoms.

  • Work was completed in a lab space which has appropriate air changes.

 What should be done differently?

  • Potential hazards must be appropriately assessed to identify necessary controls.

  • Standard operating procedures and training should be in place before work with hazardous materials begins.

  • A fume extractor should have been available at the soldering station.

What corrective actions will be taken? 

  • A Standard Operating Procedure has been developed.
  • Localized ventilation in the form of a soldering fume extractor is required while work takes place.
  • A magnifier and other tools are available.
  • Limitations on how long work takes place have been implemented.

Lessons Learned

  • Assess work for the hazards involved and discuss what steps are needed to work safely.
  • Provide necessary engineering controls to avoid exposures.
  • Develop procedures to cover chemicals and processes that are or may be hazardous.
  • Ensure that training is provided to all users of the material or process.
workbench with fume extractor

Soldering workbench with fume extractor

fume extractor (yellow box with handle)

Fume extractor