A difference in the behavior of phloroglucinol and silver iodide nuclei

Large particles of silver iodide and phloroglucinol, agents commonly used in weather modification, were subjected in the laboratory to a modeled condensation process to determine whether their ability to serve as ice-forming nuclei was altered. A difference was observed. After being wetted and redried at temperatures above 0°C, silver iodide nuclei were observed to be less effective whereas phloroglucinol nuclei were more effective. The experimental techniques, equipment, and procedure are described.