Easy-to-use, disposable swabs will work on any surface, instantly turning bright pink when lead is present. Each swab is ready-to-use. There are no hidden steps or lengthy procedures. The entire test procedure is so convenient that it can be performed anywhere in 30 seconds. LeadCheck swabs are odorless, disposable, and nonstaining. There's even a test confirmation card to verify test results. EPA recognizes the LeadCheck lead test kit when used by a certified trainer. Protect your workers or by-standers and minimize your liability by testing painted and stained surfaces, vinyl, and other plastics and dust. Not approved to test plaster or drywall.