Characteristics of sterile rooms and clean rooms

Characteristics of sterile rooms and clean rooms

The sterile room should have good lighting, avoid moisture, and be away from toilets and contaminated areas. The area generally does not exceed10m²， not less than5m²; height not exceeding2.4mFrom1—2The sample transfer box should consist of a buffer room and an operating room (the doors of the operating room and the buffer room should not face each other directly), and there should be a sterilization function between the operating room and the buffer room. The bacterial chamber should have smooth and flat surfaces on all six sides, and be able to withstand cleaning and disinfection. The connection between walls, floors, and ceilings should have a concave arc shape, no gaps, and no dead corners. Sewers should not be installed in the operating room. The sterile operating room should have a unidirectional air flow device for air sterilization and filtration, and the cleanliness of the operating area should be maintained100Grade or equivalent ultra clean workbench, indoor temperature control18—26℃, relative humidity45%—65%UV lamps or other suitable disinfection devices that can achieve air disinfection effects should be installed in both the buffer room and the operating room. The static pressure difference between adjacent rooms with different air cleanliness levels should be greater than5PaThe static pressure difference between the clean room (area) and the outdoor atmosphere is greater than10PaThe lighting fixtures in the sterile room should be embedded in the ceiling, and the indoor light should be evenly distributed with a minimum illuminance of300lxUV sterilization lamps installed in the buffer room and operation room（2—2.5w/m3）The radiation intensity should be checked regularly, and it is required to meet the requirements on the operating surface40uw/m2UV sterilization lamps that do not meet the requirements should be replaced in a timely manner. The laboratory is divided into constant temperature and humidity laboratory, precision inspection room, etc. according to different experimental objects.

Characteristics of sterile rooms and clean rooms

A clean room refers to a specially designed room that removes pollutants such as particles, harmful air, and bacteria from the air within a certain spatial range, and controls indoor temperature, cleanliness, indoor pressure, airflow velocity and distribution, noise and vibration, lighting, and static electricity within a certain required range. That is to say, regardless of changes in external air conditions, the indoor environment can maintain the originally set requirements for cleanliness, temperature, humidity, and pressure. The main function of a clean room is to control the cleanliness degree, temperature, and humidity of the atmosphere that products (such as silicon chips) come into contact with, so that products can be produced and manufactured in a good environmental space, which we call a clean room. According to international practice, the level of dust-free purification is mainly determined by the number of particles with a diameter greater than the classification standard per cubic meter of air. That is to say, the so-called dust-free is not100%There is no dust at all, but it is controlled in a very small amount of units. Of course, the particles that meet the dust standard in this standard are already very small compared to the common dust we see. However, for optical structures, even a small amount of dust can have a significant negative impact. Therefore, in the production of optical structure products, dust-free is an inevitable requirement.