Laboratory measurements were carried out to test for the possible direct loss of ozone on ice surfaces and solid solutions of nitric acid, sulfuric acid, and sodium sulfite over the temperature range 195 to 262 K. Experiments were performed in a vertical flow tube where the reactor wall as coated with the desired surface. Results indicate that loss of ozone on an ice surface is insignificant. A discussion of the possible importance of these results in the stratosphere is given. ¿American Geophysical Union 1992