What are the types of flows in a clean room?

Clean rooms are environments that maintain a low concentration of particles to prevent contamination of sensitive products. In the pharmaceutical industry, where purity is paramount, airflow control is critical to ensuring the quality of the finished product.


Air flows, the typologies

There are two main types of airflow: laminar flow and turbulent flow.

Laminar flow is characterized by a uniform air flow that flows in only one direction, preventing the circulation of particles from the surrounding environment to the product. This type of airflow is used in sensitive manufacturing processes, where purity is essential.

Turbulent flow, on the other hand, is characterized by more chaotic and irregular air circulation. This type of airflow is used in less critical environments, where purity is important but not crucial.

Regulations and tools

As far as regulation is concerned, the European Pharmacopoeia (EP) and the United States Pharmacopoeia (USP) provide the requirements for air quality inside clean rooms. These requirements include particle concentration, differential pressure, temperature, and relative humidity.

To monitor the performance of the airflow inside clean rooms, control instruments such as particle counters, pressure gauges, thermometers and hygrometers are used. These instruments make it possible to verify that the airflow meets the requirements set by the standards and ensures the quality of the product.

In conclusion, controlling airflow in clean rooms in the pharmaceutical industry is crucial for ensuring the purity of products and the quality of the finished product. The choice of airflow type depends on the needs of the manufacturing process and regulatory requirements. The performance of the airflow can be monitored with the use of specific control tools.

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