Hygenic Endo Ice spray can be applied to a cotton pellet for determining pulpul health. At just 26.2 degrees Celsius, Endo Ice is much colder than actual ice or ethyl chloride, yet does not require refrigeration. For safety and accuracty, there is a directional spray extension included, and no CFC's to worry about. Endo Ice is environmentally friendly and has a fresh, spearmint scent.