Open Top Vertical Batch Tanks are designed for indoor applications and are perfect for batch chemical/mixer mounting systems. Other applications include: water treatment, wine making, beer brewing, biodiesel / bio-fuels (WVO), liquid fertilizer, liquid feed, batch / mixing tanks, Slurry/ Sludge (Settling Tanks), agricultural grains, and agricultural/ industrial compatible chemicals. Open Top Vertical Batch Tanks include bolt-on lid for access. Optional Polyethylene hinged lid is available. Optional Poly Stands are available for an additional price. Gallon/ liter indicators are included on one side of the tank. Tanks are manufactured from medium-density Food Grade Polyethylene with U.V. inhibitors and are designed for the containment of chemicals with a specific gravity of 1.7 or less. Stands, Lids and accessories sold separately. For Flat Bottom Batch Tanks, Adapter is required for Poly Stand.