The air around us can contain trillions of particles per cubic meter. Clean rooms on the other hand contain from 10,000 to 1 particle per cubic meter in the air. They achieve this with their special filtration systems, special suits for workers, air showers, shoe cleaners, and daily cleaning of surfaces and objects. Clean rooms show us how particles that are floating around in the air can easily settle onto various objects and surfaces, where they can be transferred all over the place. In the case of clean rooms, that would be the components and processes that shouldn’t be contaminated. So if one is careful enough, and the clean room is doing its job, sterility and non-contamination can be achieved.
Where do all of these contaminations come from? They come from numerous places: they can be tracked in by workers; they come in through unfiltered ventilation systems, and most of all, humans themselves. Humans shed 1 billion skin cells a day, which can carry bacteria. So clean rooms get rid of a lot of these particles with filtration systems; the rest of the particles can settle onto surfaces however, which have to be cleaned up with special products.
That is why it is a good idea to constantly clean flat surfaces, even in your every day environments, where particles can settle from the air and build up. Bacteria can build up in these areas, leading to unclean conditions and the transmission of flues and colds. Even if you don’t have a high quality filtration system, you can still keep your regular workspace (or your house) clean by ensuring that surfaces are constantly clean, since particles are always settling on them.
Particles themselves that are wiped up should be disposed of without touching the clean surfaces with the soiled cleaning materials, which could lead to recontamination. You may not be able to achieve the low particle count that a clean room can achieve, but at least you can remove a lot of particles that could potentially contain bacteria, which will guarantee cleanliness and better health in your workspace or residence.