Same formulation as Unisol 4No preservatives. Simply buffered saline. Purilens Plus Preservative Free Saline Three 4 Fl Oz 120-mL Bottles pH-balanced From the manufacturerPuriLens Plus Saline 4 oz (Box of 3)Package of three 4-ounce / 120mL bottlesPuriLens Plus saline solution is a safe FDA approved preservative-free, pH-balanced, sterile, aqueous isotonic solution of sodium chloride, buffered with boric acid and sodium borate. It DOES NOT contain chlorhexidine, thimerosal, or other mercury-containing compounds.  Safe to apply to contact lenses before insertion. Discard any remaining solution 14 days after opening. FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease).FDA approved for use as an insertion solution for scleral lenses!PuriLens Plus Preservative-Free Saline is indicated for use following proper lens disinfection as recommended by the eye care practitioner.  For rinsing contact lenses prior to lens insertion. This solution may also be used as an insertion solution for large diameter (scleral) contact lenses, as a rinse for contact lens cases, and may be used as needed throughout the day to rinse contact lenses.How To Open Our BottlesTo open the bottle, first remove the cap and discard the white plastic restraining ring. PLEASE NOTE: The purpose of the restraining ring is strictly to avoid the bottle accidently being punctured and opened during transit. The white plastic restraining ring WILL NOT be attached to the cap or bottle. This is normal and does not indicate tampering. Turn the cap clockwise to pierce the container.Purilens Plus Saline is a buffered preservative-free salinepH balanced to eye’s natural tears for superior comfortFor dry and sensitive eyesFor all contact lens wearersMaximizes contact lens comfort and clarityTRAVEL: This is a TSA approved size! Please note, however, that TSA rules apply only within the USAProduct DescriptionBox of Three (3) 4 oz. bottles of PuriLens Plus Preservative Free SalineReturn Policy: We offer a 30 day return policy from the receiving date. Please contact us for a Return Label. Please use our return label provided by us because it will go back to our supplier. Feedback: Your satisfaction is very important to us! If you have any problem with your order, please contact us and we will do our very best to make you satisfied. As long as you are happy with your purchase, please leave a positive feedback for us. We will always leave you a positive feedback in return. If you have any problem with your purchase, please do not leave a negative feedback. Please Contact us … and your issue will be solved quickly and positively We are a small family-owned business trying to make it, not a huge company that doesn’t care … We will ALWAYS do our best for you