Major and Minor Sources of Cleanroom Contamination in Cleanrooms

Major Source of Cleanroom Contamination  Sources

* Personnel
* Incoming Air
* Machineries
* Raw Material
* Packing Material
* Chemicals Used for Cleaning
* Office Equipment and Material
* Visitors
* Maintenance Personnel

General Source of Indoor Environment Cleanroom Contaminations
People
skin scales, microorganisms, tobacco, smoke, hair, textile fibres
Cleaning Activities
choice of material and chemicals
Machineries
painting, welding and grinding
Construction Material
fibrous insulation material, microorganisms in wet wood

General Source of Outdoor Environment Cleanroom Contaminations

Natural Processes

wind, fire and natural cycle of plants
Manmade Processes
fossil material waste disposal