We are using sodium lauryl sulfate (SLS) to clean inox tray. Suppose that area of the tray is 300 cm^2, we use swab method (100cm^2) to sampling the equipment’s surface. I want to know the safe limit of SLS on the tray. Or, in other words, at what limit the usage of the tray is not a hazard to human health.
Can anybody explain me the way to calculate the limit?
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