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The high-tech sector requires the setting up of cleanrooms and associated controlled environments in which we endeavour to control the concentration of airborne particles, the temperature, humidity and pressure.


This is a very diverse sector in light of its multiple activities (micromechanics, microelectronics, semiconductors, optics, high power laser, space and nanotechnology, etc.).

A clean room is surrounded by its shell, a physical barrier made up of partitions, ceilings, doors and floors separating various (classified and/or unclassified) areas which have to meet a certain number of design criteria or very specific performance requirements (mechanical performance, geometry, ergonomics, fire hazard properties, sound proofing, etc).

In the High Tech sector, the following contamination risks and areas may be identified:

  • Protecting equipment in the room which could be contaminated by particles or molecules,
  • Protecting manufactured products which could be contaminated by operators, particles or molecules.

Materials that make up the shell of a cleanroom must primarily comply with requirements for airtightness, cleaning, shock and colour resistance, ATEX compatibility, non-retention of particles and non-proliferation of contaminating agents.

Under certain conditions, partitions have to comply with specifications associated with the risk of outgassing or electrostatic charges or discharges (ESD compatibility).

The standard NF EN ISO 14644 defines a cleanroom as being a "room in which the concentration of airborne particles is controlled and which is built and used in such a way as to minimise the introduction, production and retention of particles inside the room and in which other pertinent parameters such as temperature, humidity and pressure are controlled as necessary."

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