What is the appropriate method for collecting wipe samples from hard floor surfaces and carpeted surfaces?

Collecting samples separately using different wipes is the correct method for obtaining wipe samples from hard floor surfaces and carpeted surfaces. This approach is crucial because different materials may have varying degrees of adherence for lead dust or contamination.

Using separate wipes helps prevent cross-contamination between the surfaces, ensuring that the wipe from the hard floor does not carry lead particles onto the carpeted surface and vice versa. This is especially important in risk assessments where accurate data is necessary to evaluate the potential for lead exposure effectively.

Moreover, different surfaces can have different cleaning and sampling protocols due to their unique textures and properties; what works for one may not be suitable for the other. Therefore, utilizing distinct wipes for hard floors and carpets maintains the integrity of the samples collected.