Each kit contains Indicator Solution, Swabs, Tube, an Instruction Manual/Information Package on lead in the household & Color Comparison Chart. Note: Clear white vinegar is required for the Patented Leach Method. Any clear vinegar will work. An unlimited shelf life as long as the vial is closed tightly so you can do some testing now and in the future! Patented Test Kit & Method. Laboratory Tested Product LEAD INSPECTOR Lead Test Kit (and method) has been tested by independent and government laboratories and found to be effective for consumer use to detect lead. These reports are available online. Uses LEAD INSPECTOR detects lead instantly at-home with no sending samples to costly labs! Get results instantly at-home! Check for lead in: Toys (plastic & metal) Childrens Lunch Boxes Pet Toys Pet Bowls Fabrics (natural and man-made fibers) Paint paint chips Painted surfaces Water (drinking / potable) Pottery dishes Fine china Ceramic-ware Glass Leaded crystal Electronic Assemblies Circuit boards Other industrial applications Soil (garden, lawn & industrial) Dust renovation Construction dust & dirt Jewelry Solder Joints Plumbing Bath tub glazes Mini-blinds Furniture Antiques Food can seams Candle wicks Mexican Candy Cosmetic Make-up (lipstick, mascara)