A Thimerosal-Free Preserved Saline Solution. Two-sterile 12 fl oz bottles. Rinsing, storage, heat disinfection. For use with daily and extended wear soft contact lenses. Especially for sensitive eyes. Thimerosal-free formula. A sterile, isotonic, buffered solution It is a safe and effective product that removes loosened debris from the lens when used as a rinse after cleaning. It also removes existing calcium deposits, and prevents new deposits from accumulating, when used as directed in heat disinfection. Walgreens sali.