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​Can I bring food into the cleanroom?

  • Author:Jason Peng

  • Cleanroom Engineering Technology Manager of Deiiang Company.

    Product R&D Manager of GDC Inc. Cleanroom Equipment Manufacturing Company.

    Executive Director of Guangdong Cleanroom Industry Association of China.

    Engaged in R&D of related products for 15 years, with rich relevant technical experience

  • 2024-10-07  |  Visits:

In cleanroom management, it is vital to maintain the cleanliness and safety of the environment. The question of whether or not food can be brought into A CleanRoom involves a number of aspects, including the cleanroom management system, daily cleaning and disinfection practices, and the employee eating management system. This paper will analyze this in depth.

Clean room management system

Clean cleanroom wall hygiene.jpg

Clean room management system is to ensure that the Clean room environment in line with the basic framework of specific clean standards. The system mainly includes:

1. Access restrictions: usually stipulates that non-staff shall not Enter the clean room at will, the entrants need to be trained and understand the operating procedures. 2.

2. Item Management: All items entering the cleanroom are subject to rigorous screening to prevent the introduction of external contaminants. Food, as a potential source of contamination, is usually prohibited from being brought into the clean room.

3. Operating procedures: In the clean room, all operations need to follow strict procedures, including wearing special work clothes, protective equipment, etc., to reduce the impact on the environment.

The clean room daily cleaning

Daily cleaning is to prevent foreign matter from contaminating the important area, in accordance with the appropriate frequency of all related operations. Clean room cleaning is performed several times a day, once a day, or once every few days, depending on the cleanliness assessment. Vacuum cleaners, water mopping of floors, and wiping of other surfaces to remove waste from common areas such as locker rooms, move-in areas, and lobbies can be performed during production hours. In each room of the clean room, the cleaning process is specialized and documented according to the importance of the product and manufacturing process.

Countertop cleaning and sanitizing.jpg

Daily cleaning of the clean room is a critical step in maintaining a clean environment and includes:

1. Regular Cleaning: The cleanroom needs to be thoroughly cleaned according to a set cycle to ensure the cleanliness of all surfaces, equipment and air.

2. Cleaning supplies selection: Use specialized cleaning agents and dust-free cloths to avoid the introduction of new sources of contamination during the cleaning process.

3. Personnel management: only trained personnel can carry out cleaning operations to ensure that the cleaning process will not cause additional pollution of the clean room.

The clean room disinfection

Disinfection is an important part of the maintenance of the clean room environment, there are mainly the following ways:

After the cleaning process is all completed, the inhibition of microorganisms is also very obvious. However, some industries and rules usually in addition to the cleaning process will also add a disinfection. The method of disinfection and the results to be achieved depend on the specific conditions of each clean room.

1. chemical disinfection: using industry-standard disinfectants, equipment and surfaces in the clean room are regularly disinfected to kill potential microorganisms.

2. Physical disinfection: Methods such as ultraviolet light disinfection and hot steam disinfection are effective in removing air and surface contaminants.

3. Disinfection records: All disinfection operations need to be recorded in detail for tracking and management to ensure that the disinfection results meet the requirements.

Generally speaking, the effect of disinfection is related to the type and concentration of disinfectant, the temperature of the disinfectant and the time of contact with the surface. Disinfectants (such as elemental chlorine series disinfectants for stainless steel surfaces) that are not effectively removed after disinfection can cause deterioration of the cleanliness of cleanroom surfaces, as well as toxicity, or worse, adhesion to products. Therefore, it is important to clean the surface after disinfection to remove the residual disinfectant solution. Inappropriate use of disinfectant will cause harm to the health of the operator.

Staff feeding

Employee Eating Management System

In the clean room, the employee eating management system is particularly important, including:

1. Eating prohibited: general regulations, employees are not allowed to eat or drink in the clean room to avoid food residues and odor pollution of the environment.

2. Dedicated area: set up a special rest and dining area to ensure that employees do not affect the cleanroom when enjoying food.

3. Training and publicity: Enhance the staff's understanding of the cleanroom management system through training and publicity to ensure that everyone complies with the eating management rules.


To summarize, bringing food into the cleanroom does not comply with the cleanroom management regulations. Food may not only be a source of contamination, but may also adversely affect the environment and operation of the cleanroom. Therefore, to ensure the cleanliness and safety of the cleanroom, employees should eat in the designated area and follow the cleanroom management system to maintain a high standard of working environment.

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