According to the requirements of ISO 14644, the purpose of airflow direction testing and visualization is to confirm whether the airflow direction and its consistency meet the design and specifications. It also confirms the spatial and temporal characteristics of the airflow. This is useful for determining whether there is turbulence or turbulence. Very useful.
The test objects include: clean room, high-efficiency air outlet, air return, laminar flow hood, biological safety cabinet, etc.
Third, the verification method:
With reference to the requirements of ISO14644-3, use a pure water generator to generate a small water mist of about 1-5um.
Fourth, test equipment:
Heavy fog Pacific Instruments produces Airflow Visulizer II or American M2001 liquid nitrogen sprayer.
Five, test qualifications:
China clean room training qualification