Ion exchange is used for equally analytical and preparative applications in the laboratory, the analytical utilizes currently being the greater prevalent. Wouldn't you mention that "shone" remains to be improved. Out of contexts like "shine shoes" or "shine a flashlight" I'd say "shone" all the time. At least certainly https://fernandokudlu.blogdiloz.com/38346403/an-unbiased-view-of-pfas-monitoring