DC-900700-1.5, Duracast 700 Gallon Plastic Storage Tank | 900700 Keep hazardous chemicals in a container that you can trust. Duracast’s vertical plastic storage tanks are built specifically to hold aggressive and corrosive chemicals without breaking down. Highly resistant to external forces as well, these vertical tanks also combat the extreme low temperatures and harsh sun rays that often cause damage. Take advantage of the convenient measurement indicators molded into each one of these tanks. With these gallon indicators, you can quickly and easily view how full your tanks are and determine when they need to be refilled. These tanks are also lightweight, easy to clean, and require little maintenance so that you can enjoy stress-free storage. This is a 1.5 specific gravity tank.