DC-911100-1.5, Duracast 1100 Gallon Vertical Plastic Storage Tank | 911100 When you need a durable storage tank you can trust, use Duracast’s vertical plastic tanks. These above-ground tanks are manufactured to the highest standards in the industry so that you can enjoy quality storage use for years. The polyethylene resin is UV stabilized and FDA approved for longer-lasting, safer storage. These tanks are able to withstand physical attack and will not break down easily in harsh weather environments. Also able to handle chemical attack, these tanks can be used to store a broad PH range. Some of the more common contents people store in these tanks include industrial and agricultural chemicals, liquid feed, liquid fertilizer, potable water and many liquid acids. This is a 1.5 specific gravity tank.