Is Propolis the Key to Safe Natural Emulsion Products? – Chromatography Explores Peter Halford • 04/07/2018 • Leave a reply 01-Jul-18 – Chromatography Today https://www.chromatographytoday.com/news/lcxlc/49/breaking-news/is-propolis-the-key-to-safe-natural-emulsion-products-chromatography-explores/46534