Twobit Charlie I'ld be cautious about much of anything that guy tells you. Lemishine is citric acid.
I rinse my cases, then toss them in the thumlers with about a cup of ceramic, a tablespoon of Lemishine and a drop of Dawn dishsoap. just cover the cases with water. Let em run for a couple hours and then dry, they come out sparkling clean and shiny.
When doing just a small batch I put the empty cases in a can and use either a scoop of oxyclean, or about a 1/2 inch of Simple Green, fill the can with water and shake it around a few moments, rinse with clean water, dry the cases, and pop them into the vibrator tumbler with corn cob media, treated with a dallop of Brasso..