What not to wear: cleanroom edition
Obviously, your cleanroom’s construction and air filtration system are critical factors in keeping your cleanroom contamination-free, but so is what people wear in the cleanroom. People and fabrics are major sources of contaminants, and it’s crucial your control those sources with proper attire. Here’s what (and what not) to wear in a cleanroom:
Do’s:
- Hoods
- Hair Covers
- Coveralls
- Intersuits
- Boots or shoe covers
- Facial Covers
- Gloves
- Frocks
Depending on the classification of your cleanroom, there may be different requirements for the garments you have to wear. For instance, an ISO 3 Class (Fed Std. Class 1) cleanroom will likely require all of the garments listed in the “do’s” above, and will likely require that those garments be changed for new or cleaned ones every time you enter the cleanroom, whereas an ISO Class 5 cleanroom will require most of those garments, to be changed every day, and an ISO Class 8 cleanroom will require only some of those garments and that they be changed every two weeks.
Don’ts:
- Makeup
- Long hair (uncovered or not pulled back)
- Fibrous sweaters or materials that shed
- Materials that cause static
- Dirty clothes or shoes
- Extremely loose or baggy clothing
- Shorts, tank tops, or other clothing that has cutouts or exposes skin
The “don’ts” here are don’ts because these items can bring contamination into the cleanroom. Dirty clothes and shoes are the most obvious of these contaminators, but a lot of contamination can come from the skin and hair cells we lose every day without us even knowing. Makeup can also shed from the skin and cause contamination, as can the fibers from clothing.
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