Preventing the generation of artificial particulate pollutants in a cleanroom is crucial for maintaining its controlled environment. Human activity is one of the primary sources of contamination, and every individual entering the cleanroom must be fully aware of how their behavior impacts cleanliness. Following specific guidelines can significantly reduce the risk of introducing particles into the space.
Personal hygiene plays a vital role in this process. As soon as you enter the cleanroom, you should maintain awareness of your actions to avoid bringing in unnecessary contaminants from outside. It's important to wear non-linting clothing such as cotton or polyester blends. Avoid synthetic fabrics like nylon or wool, which can generate static electricity and attract particles. Also, refrain from wearing items like woolen sweaters or scarves.
When it comes to cosmetics, it's best to use odorless, powder-free products such as dry deodorants or stick-based makeup. Lip balm is acceptable, but avoid products like lipstick, eyeshadow, or mascara that may leave residues or emit particles. Regular bathing and washing your hair daily helps control dander and skin flakes. Keep nails short and avoid long nails that could damage gloves or cause contamination.
Before entering the cleanroom, wash your hands with specially provided cleansers to remove dead skin cells. Avoid scratching or rubbing your skin inside the room, as this can lead to contamination. Brush your hair regularly before entering and wear a head covering that completely hides all hair, including bangs. Do not remove your hat inside the cleanroom or during the dressing process.
Avoid chewing gum or mints in the cleanroom. However, drinking water before entering can help maintain moisture in your body. Do not bring food or drinks into the cleanroom, and avoid smoking 15 minutes before entry to keep your lungs clean.
Jewelry should be minimal—only wedding rings are typically allowed. Avoid sharp or dangling accessories that might interfere with work or become a hazard. Personal items like wallets, paper products, or tobacco should be stored in lockers and not brought into the cleanroom. Wear glasses or goggles, and make sure they are cleaned before entering.
Masks are essential, especially for those with facial hair. Replace shoe covers regularly and follow the designated procedures when moving between the locker room and the cleanroom. Always wear a head cap that fully conceals your hair, and never reuse a cap once it has been removed from the cleanroom.
If using washable workwear, change it at least once a week or sooner if soiled. Follow the dress code strictly, ensuring clothes do not touch the floor. If they do, replace them immediately.
When wearing gloves, use powder-free latex or vinyl gloves. If irritation occurs, switch to vinyl gloves. Replace any damaged gloves in the locker room, not within the cleanroom itself. Remove gloves slowly to avoid tearing them.
Regular cleaning of the cleanroom is essential. Use vacuum mats at entrances to trap dust and replace them frequently. A high-efficiency particulate air (HEPA) vacuum cleaner is recommended for deep cleaning. Clean surfaces with wipes that meet cleanroom standards, and avoid using detergents with sodium, potassium, or other harmful elements.
Walls, ceilings, and furniture should be wiped carefully, avoiding rapid movements that could disturb the air. Use low-particle mops and vacuums, and ensure all cleaning tools are properly stored and maintained. Avoid using abrasive materials on sensitive surfaces.
For glass or acrylic windows, use approved cleaning solutions to prevent scratches. Always check with the manufacturer for suitable chemicals. Ladders and stools used in the cleanroom must be clean and made of appropriate materials. Never stand on tables or chairs.
Cleaning tools should be stored in designated areas, and never taken out of the cleanroom to prevent cross-contamination. Paper and containers used in the cleanroom must meet strict requirements. Avoid using pencils or regular pens that may shed particles.
In conclusion, consistent adherence to these practices ensures a safer and cleaner environment. These protocols help minimize human-generated particulates, supporting the integrity of critical processes in cleanrooms. Ron Perry, President of RPA, Inc., brings over 25 years of experience in cleanroom design and management across various industries.
Workwear (Bonnie) wear steps:
1. Grab the two cuffs of the overalls.
2. Roll up the trousers and step in one foot at a time.
3. Stand straight and grab the sleeves.
4. Loosen one sleeve, insert one hand, then the other.
5. Zip up and start working.
Removing the film layer from the mat:
1. Locate the color label on the edge.
2. Carefully peel off the film from the edge.
3. Continue peeling until all corners are free.
4. Fold the film into a tent shape.
5. Gently separate the center and fold inward for disposal.
These steps ensure no particles escape during removal. Workers must follow them carefully to maintain cleanliness.
The BHC-1300IIA/B3 biological safety cabinet is an essential tool for microbiology labs requiring operator protection. It provides a sterile, dust-free environment ideal for bacterial cultures and research. Features include constant airflow, HEPA filtration, and a user-friendly interface. This equipment is widely used in medical, pharmaceutical, and scientific fields.
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