Bag Leak Detection Powder is fluorescent for use in fabric filter dust collection units. Once injected into the system, Bag Leak Detection Powder quickly and efficiently pinpoints any leaks, holes, or tears in the dust collector (bags, cartridges, seams, cell plates, etc.). Bag Leak Detection Powder is also used to ensure proper installation of new filter bags or cartridges and is non-hazardous and non-toxic.