The 403A Super Cold 134 is a pure, non-flammable Cold Spray that is used primarily for diagnosing thermally intermittent problems with electronic devices. The cold spray contains pure 1, 1, 1, 2-tetrafluoroethane [HFC 134a]. It is also useful for protecting heat sensitive components during soldering, quickly cooling solder joints, and it can also be used to quickly remove gum and other adhesives from a variety of surfaces. Also used in other applications where spot freezing is required. Application Instructions: For best results, follow the procedure below. 1] Firmly hold the head of the trigger nozzle. 2] On top of nozzle, pull the security tab to snap it off. 3] If needed, insert extension tube. 4] Pull the trigger in short bursts. 5] For delicate and precise applications spray liquid onto a Cotton Swab [811-100] and dab.