Wet Stains on Nonabsorbent Surfaces

Collection procedures for wet stains on nonabsorbent surfaces are as follows:

• Use one or more sterile swabs (or sterile gauze for larger stains) to soak up the stain.
• Concentrate the stain on one portion of the tip of the swab.
• Allow to thoroughly air-dry.
• Collect the control sample by slightly moistening the swab with distilled water and rubbing an area of the surface in an unstained region near the stain.

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