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Reducing the Need for Shoe Covers
Shoe covers are commonly used in cleanrooms as a way to control foot borne contamination. Though few who wear them give much thought to these critical environment consumables. Many controlled environments might discover that they are using a shoe cover that is not only inappropriate for their environment, but is more expensive than a better suited product.
The cost of shoe covers can vary greatly from high to low end products, both types with differing USP’s and an organisation’s aspiration for quality will greatly impact the cost on budgets.
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 cause risk to your critical environment.
Potential risks vary with shoe covers, depending on the materials produced. These risks include ripping, slipping of feet and inability to apply to larger feet. 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.
Is there a need?
Shoe covers are amongst a vast number of commonly used contamination control solutions, but when considering costs, usage and disposal, Dycem can prove to be an effective, high quality and lower cost alternative in the long run.
Shoe cover cost formula:
Shoe cover x 2 (= 1 person) x individuals per shift x shifts per day x days operation per year. What also should be considered is time lost putting on and removing overshoes, and the amount of entry and exits per person per day in and out of the environment.
0 change over required x 2 shifts per day x 7 days per week (12 monthly replacement contract per pricing matrix)
Shoe covers are commonly used in cleanrooms across the world
Shoes produced have inherent weaknesses that could pose a risk to your critical environment
The cost of shoe covers can vary greatly from high to low end products
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Reducing the need for shoe covers