Lead Poisoning Detection AAwipes Lead Test Swab Kit (Starting from 50 Jars 4000pcs swabs, 80 Pcs/Jar Rapid Home Testing Swabs, 30-Second Results Dip in Water). Home Use, Painted, Dishes, Toys, Jewelry, Metal, Ceramics, Wood (LS80-50)80 Counts Value Pack with Long Shelf Life: Each box contains 80 Pcs of the Lead Test Kit, providing a cost effective and valuable solution. Shelf life is 2 years. 30 Seconds Instant Results: Obtain quick results in under 30 seconds with the highly sensitive Lead Paint Test Swab. Use Water: Wet the swab tip under water (No vinegar needed) for 5 8 seconds, shake off excess liquid. Once the swab tip turns mustard yellow, promptly rub the painted surface