Matsuda M339670820 Portable Eye Washer, 16-Gallon gravity flow eyewash unit uses gravity to deliver water through dual spray heads. The unit delivers over seven gallons (26 liters) of water for fifteen minutes and is ideal for use where a continuous supply of potable water is not available, especially in remote plant areas, low traffic, and/or low hazard areas. Tank has handles on top and side to allow for easy handling. A wide-fill opening with a threaded cap permits easy inspection, cleaning, and filling.