If I use Letheen broth as a preparation method in USP 61 & 62, do I need to inoculate it into TSB?

I'm trying to figure out the methodology according to the American Pharmacopeia to use in non-sterile cosmetic assays. If I dilute 10g of my sample with a neutralizing broth, letheen in this...

28 July 2025 5,108 3 View