A significant limitation of homemade phantoms is shelf life. Our goal was to compare the impact on shelf life of easily obtained additives. Fifteen additives were mixed into a gelatin-psyllium hydrophilic mucilloid fiber phantom; three of these additives were used as a layer on top of the phantom. https://www.diegojavierfares.com/deal-time-Hybrid-Racing-V3-Short-Shifter-Assembly-02-06-RSX-K-Swap-flash-save/