Exposome BioSciences Lead Test Kit for home use is an EPA recognized, non-toxic rapid test for lead check on hard surfaces to help ensure a safe and healthy environment. Results are instant in less than 30 seconds. These test swabs are simple to use, individually wrapped and disposable. Simply rub the lead test swab against a surface to detect in less than 30 seconds if the rubbed surface has led contamination. These instant lead check swabs can be used on painted surfaces, coated surfaces, metals, plastics, composite surfaces, vinyl, wood, dishes, ceramics, glass, all hard surfaces and materials.