What is Contamination?

People often think of contamination as particles, dust, dirt or some type of chemical residue. Lighthouse looks at contamination per the Institute of Environmental Sciences and Technology (IEST) definition: “Any foreign material or energy that has a detrimental effect on product or process.”

Examples could be:

  • Air or liquid borne particles
  • Gas phase or airborne molecular contamination
  • Electrostatic charge or electrostatic discharge
  • Electromagnetic interference
  • Fluctuations of cleanroom or minienvironment differential pressure
  • Fluctuations of cleanroom temperature & relative humidity
  • Vibration
  • Surface particles
  • Air changes