DC-910100-1.9, Duracast 100 Gallon Heavy Duty Vertical Tank | 910100 When you need a storage tank that is stronger than the rest, choose Duracast’s heavy duty vertical tanks. These tanks are produced to hold liquids up to 1.9 specific gravity and can withstand a broad PH range. People commonly use these tanks to store a variety of agricultural and industrial chemicals, liquid fertilizers and many kinds of acids. These tanks are manufactured to handle both indoor and outdoor environments. The polyethylene resin is UV stabilized to slow down sun damage and keep the tanks in good condition for longer. Their low temperature impact strength keeps these tanks from cracking in frigid weather conditions. These tanks are equipped with an 10-inch vented lid and gallon calibrations. This is a 1.9 specific gravity tank.