Arcturus Therapeutics 1 article published in JoVE Chemistry A Workflow for Lipid Nanoparticle (LNP) Formulation Optimization using Designed Mixture-Process Experiments and Self-Validated Ensemble Models (SVEM) Andrew T. Karl1, Sean Essex2, James Wisnowski1, Heath Rushing1 1Adsurgo, LLC, 2Arcturus Therapeutics This protocol provides an approach to formulation optimization over mixture, continuous, and categorical study factors that minimizes subjective choices in the experimental design construction. For the analysis phase, an effective and easy-to-use modeling fitting procedure is employed.