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Particle Measurements

Various microorganisms in the breathing air move by clinging to the particles, thus creating a living space for themselves. The number of microorganisms and particles varies depending on the size of the area, the excess movement in the environment, the climatic conditions and the number of people in the environment. For example, in an inert environment, 100 is spread to one thousand particles per minute, while 2,5 million particles are spread to the environment by one person sitting up and running.

The particle and the microorganisms carried by them cause fungal infections, bacterial infections, viral infections and similar infections. In addition, these particles cause allergies in the human body, cause poisoning and cause various reactions.

Particularly, the working environments should be cleaned from microorganisms and particles as much as possible and appropriate ventilation systems should be installed for this purpose.

Particle counting according to the ISO 14644-1 standard is a method of measuring the particle level required by the cleanroom class as described in the standard. In this method, particles in the size of 0.3, 0.5, 1.0 and 5.0 in one cubic meter are counted.

Particle counting is performed in places with hygienic ventilation system. These places are provided with adequate isolation from the outdoor environment, regular air flow from the clean area and controlled running inlets and outlets. There is no point in making this count in places where control is not provided. In addition, before the particle counting according to the standard is carried out, it is necessary to perform a leak test, to measure the air flow rate and to determine the ambient differential pressures and air flow rates. Because the density of particles and microorganisms can only be reduced to the desired levels in these environments.

Our company also performs particle measurements within the scope of gas measurements. In these studies relevant legal regulations, standards and test methods published by local and foreign organizations. A few standards considered in these studies are:

  • Clean rooms and their controlled environments - Part 14644: Classification of air purity by particle concentration
  • TS EN ISO 14644-8 ... Chapter 8: Classification of airborne molecular contamination

In the meantime, our organization, ÖSAS Accreditation Agency, Accredited according to TS EN ISO / IEC 17025 standard.