●This is a multipurpose lead test kit for detecting lead contamination on all surfaces and in substances. ●Test all hard surfaces, including metallic and composite material surfaces in your surroundings for lead to help ensure a safe and healthy environment. ●Test painted and coated surfaces, countertops, toys, bathroom surfaces, tabletops, desktops, drinking fountains, doorknobs/door handles, chairs, kitchen utensils, hard walls, metals, composits, all other surfaces and materials. ●Instant Results, Easy To Use, Highly Accurate, Non-Toxic and Reliable Tests. ●Statistically Significant Test Results; Over 99% Accurate. ●Individually sealed test swabs. ●Extended Shelf life – each individually sealed test swab is chemically stable indefinitely. Each unsealed test swab has a shelf life of two years from the day that the plastic seal is broken.