Handle an open flame source with great care. Fibers will ignite suddenly and burn quickly at a very high temperature. Use something that will not conduct heat (forceps are metal and should not be used to hold onto something that is burning) to hold samples in the flame. Wear protective goggles when flame-testing fabrics. Inhaling fumes from burning should be avoided. Work in a well-ventilated area. Make sure a nonflammable surface is placed below the fibers to catch drips or sparks.