Some chemicals thicken, crystallize, or separate at ambient temperature, and others require continuous mixing to keep solids in suspension or prevent stratification, problems a standard storage tank has no way to address. A heated tank uses an electric jacket, immersion heater, or heat tracing to hold chemical above its viscosity or crystallization threshold, keeping it pumpable in cold conditions or with naturally viscous products. An agitated tank adds a mixing impeller, driven by a top-mounted motor, to keep solids suspended or blended chemicals homogeneous, preventing the settling or layering that would otherwise send an inconsistent concentration to the pump over time. Many applications call for both features on the same tank, particularly polymer and slurry chemicals that are both temperature sensitive and prone to settling.