Dye Tracer Tablet, Dye Type Water Tracing Dye, Color Blue, Form Tablet, Container Size 1.25 g, Coverage 20 gal (Strong Visual), 200 gal (Light Visual), Dissolution Time 3 to 6 min, Detectability less than 100 ppb, NSF Certified Yes, Fluorescent No, Application Closed Loop Leak Detection, Illicit Downspout Connections, Plumbing Leak Detection, Septic Inspections, Sewer and Drain Connections, Toilet Leak Detection, Standards ANSI; NSF, Package Quantity 200