Fluorescein Sodium is a brightly colored dye. It is used to check the surface of the eye for scratches, for corneal and conjunctiva problems, evaluation of contact lens fitting and in applanation tonometery. Specifications Each strip is impregnated with 1 mg Flourescein Sodiuim. CE Marked Each strip is EO Sterilized Shelf Life 5 Years Packing Box of 100 Sterile Strips Individually Packed Box of 300 Sterile Strips Individually Packed