LeadPaintEPAsupplies Guarantees all LEADCHECK swabs purchased will be 100% defect free. Every swab is HAND CHECKED prior to leaving our warehouse, No other supplier makes that GUARANTEE….PERIOD – OTHER SELLERS TRY TO EMULATE US BUT DO NOT OFFER THE “ZERO DEFECT POLICY” THAT WE OFFER – 3M LeadCheck is the ONLY instant, EPA recognized lead detection test swab available on the market today, and always includes a test verification card to make sure that your test kit is working correctly and to your expectations. When you purchase your LeadCheck lead test kit swabs from Lead Paint EPA supplies you can be rest assured that your kit will be ready to use. Many past users say that you will not find an easier way to test for lead in your home, office, or job site. 3M Lead Check is a non-toxic kit, and is the most affordable kit available and can be disposed of in your regular trash after using. These test swabs provide and instant test on most surfaces, including wood, ferrous metal, (alloys that contain iron), drywall and plaster, plastics and vinyl materials, and ceramic materials. The entire test should take no more than 30 seconds, and be completely accurate when testing is done on materials found to be viable by an EPA Certified Renovator or are materials that are suggested for testing. LeadCheck Swabs provide a rapid, sensitive and specific test for leachable lead on most any surface. When lead is detected, the LeadCheck swab and / or the surface being tested will turn PINK or RED on contact to confirm the presence of lead depending on the concentration of the lead. The use of this kit is not confined to EPA Certified Renovators except within the RRP program from the EPA. This item may be used by a homeowner to check their home as well and give you peace of mind, especially when you have children in your home.