Artificial Tears (sterile), also known as synthetic Tears fluid, is a solution that simulates the components and pH of Tear fluid. This reagent is sterilized by 0.2 μm filtration. pH Value: 7.4 (Ask for the customization) Shelf Life: One year while Kept Frozen Pack Size: 50 mL, 100 mL, 200 mL, 500 mL