The Fendall Pure Flow 1000 delivers unequaled eyewash safety reliability and value that features a patented system delivering a purified contaminant-free and physiologically correct buffered saline solution from factory-sealed cartridges. Fendall Pure Flow 1000 does not require costly plumbing. It incorporates a fluid pressure balancing system that provides a constant ribbon fluid flow at the rate of 0.4 gpm for the entire 15-minute flushing period which is required by industry standards. Factory-sealed cartridges last for two years. An integral fluid reservoir captures waste fluid to eliminate spill hazards and simplify fluid disposal. This means the unit captures its own waste eliminating potential spill/slip hazard and simplifying cleanup. A stop valve beneath the unit allows easy draining of reservoir after use. Available in multilingual versions including French Spanish and English. Shelf life is determined by date of manufacture. Always check product expiration date. Meets ANSI Z358.1-2004.