The Chem-Tainer 90 Gallon PE Cylindrical Open Top Tank (SKU TC3030AA) is a 30-inch by 30-inch open top tank built from natural white polyethylene for general water and bulk liquid storage where you need top access for filling, mixing, monitoring, or dipping. The open top format keeps the contents visible and reachable, which is why buyers searching for a white open top tank, a plain open tank, or a cylindrical open top tank land here when they want a straightforward 90-gallon vessel without a sealed lid. With a 30-inch round footprint (30 in. diameter) and a 30-inch height, it fits tight equipment rooms, fab shops, and pad-mounted installations without dominating the floor.
Will it hold what you need?
This tank is rated to a 2.0 specific gravity, which means the wall thickness supports liquids substantially heavier than water. Filled with water, the contents weigh roughly 751 lb; at the full 2.0 SG rating the contents can reach about 1,501 lb. That headroom matters: water sits at 1.0 SG, so you have real margin for denser fluids, but always verify your liquid's specific gravity against the 2.0 ceiling before you fill. Plan your support accordingly - a fully loaded tank concentrates significant weight on a 30-inch round footprint, so the pad or platform underneath has to carry it. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm 90 gallons is the right working volume for your fill-and-draw cycle.
Installation and support
Because this is an open top tank, the rim is not a sealed closure - it is meant for access, so design your placement around splash, evaporation, and debris exposure if the tank sits outdoors or near process equipment. For above-ground siting, a flat, fully supporting base is essential; an open top cylindrical tank loaded near its rated weight will punish an uneven pad. Our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI framework for getting the foundation right. See the technical drawing on this page for the dimensioned profile before you build the base.
The mistake to avoid
The most common error with an open top tank like this is treating the 2.0 SG rating as permission to store any heavy liquid. The rating describes the structural capacity of the wall - it does not certify chemical compatibility. This is a water-service tank as listed, with no fittings supplied, so it ships ready for top fill and manual or pumped draw. If your application involves a denser or reactive fluid, confirm both the specific gravity and the material compatibility before committing. For reservoir-style and stored-water duty, the discipline of sizing for actual demand is covered in our fire-water reservoir tank design guide, and water-reuse applications are detailed in our industrial water reuse tank topology guide.
This tank ships LTL freight from the West Babylon, NY plant, quoted live to your ZIP code. Get an exact number in seconds with our Freight Cost Estimator, or call 866-418-1777 to talk through your build with a real person. We will help you confirm sizing, freight, and the right base before you order.
