Unique structure delivers two gentle even streams of solution enabling both eyes to be rinsed at once. Bottles contain a sterile 0.9% sodium chloride solution (saline) for rinsing dust and debris, or a sterile 4.9% phosphate buffer (pH neutralizing) solution to quickly neutralize acids and alkalis. Each is labeled with clear instructions; twist open for quick access, and has a built-in eye piece to aid in effective rinsing of the eyes. Use to refill stations or take to job sites as part of first aid kits. Bottles require no maintenance and have a three year shelf life from date of manufacture. Meets ANSI Z358.1-2009 (as a personal eye wash only). CE marked.