CultureWell silicone dividers are designed to affix to the surface of CultureWell coverslip gaskets. Reagents may be pipetted into the openings of well dividers as desired. Silicone well dividers may be re-used by rinsing thorough with distilled water after each use and re-sterilization. Dividers may be sterilized by autoclaving, or alcohol rinse. Unused sterile dividers may be stored by placing them in sterile, covered culture dish until ready to use.