Instant Lead Test Swab Kit (Starting from 6000 Lead Poisoning Detection) Household Testing Swabs) 30-Second Results. Dip in White Vinegar. Home Use for All Surfaces - Painted, Dishes, Toys, Jewelry, Metal, Ceramics, Wood (LS30-50)30 Counts Upgraded Value Pack with Long Shelf Lifetime: Each box contains 30 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. Incredibly Easy to Use Use Water: Wet the swab tip under water (no vinegar required) for 5 8 seconds, shake off excess liquid. Once the swab tip turns mustard