Bag Leak Detection Powder is fine 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 plate, 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.