What is an emitter?
Emitters are devices (cups, foams, bags, covers, etc.) which contain patented compounds called Rust Blocker VpCIs (Vapor Phase Corrosion Inhibitors) which evaporate (emit) into the surrounding enclosure or package. (In essence, VpCIs travel through the atmosphere and attach themselves to metals.) This is much like water as it evaporates but it takes place over months or years instead of minutes or hours. We generally refer to Bull Frog emitters as those individually packaged products that are the 3″ strips, emitter cups and emitter shield. However, the Bull Frog, Rust Blocker VpCI fabrics used in our bags and covers, are often used in the same manner. In general, all Bull Frog products contain VpCIs and will act as emitters although they are not normally called emitters.
