Shoe covers are commonly used in cleanrooms as a way to control foot borne contamination.
The cost of shoe covers can vary greatly from high to low end products, offering a range of quality and performance levels.
Many manufacturers and/or distributors claim good traction, durability, waterproof capabilities and most of all contamination avoidance when selling shoe covers. However, the materials the shoes are produced from (chlorinated polyethylene, polypropylene, PVC) all have inherent weaknesses that could create a risk to your critical environment.
Potential risks with shoe covers, such as ripping and slipping, will depend on the materials they are made from. Polypropylene (PP) presents several problems in a controlled environment setting. PP is a non-woven material, which means that it can and will shed particles.
Furthermore, the highest risk is not necessarily through the usage of the shoes, but applying them to feet. Using dirty/unwashed hands bypasses the purpose of having shoe covers and adds contamination to the underside even before entering critical environments.
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