Advantages of Rinsol Comfort Drops Moisturzes Eyes Long Lasting Effect For all type of contact lenses Inernationally approved formula with PHMB Standard Technical Specifications Disinfecting Agents: Polyhexanide (PHMB) Cleaning Agents: Non-ionic surfactants Hydrating Agents: Propylene Glycol Physical Properties: pH: 6.6 – 7.8 (usually optimized to match tear fluid) Osmolality: 250 – 350 mOsm/kg (isotonic to tears) Sterility: Sterile until opened; typically preserved with antimicrobial agents Appearance: Clear, colorless, aqueous solution