The Chem-Tainer 675 Gallon Open Top Batch Storage Tank is a cylindrical, open-top polyethylene vessel built for batching, mixing access, and bulk water or process-liquid storage where you need to reach into the tank from the top. It measures 46 inches tall with a 66-inch outside diameter, sitting on a 66" x 66" footprint, holds 675 gallons, and is molded in natural white polyethylene. As a white open top tank, it gives you full top access for adding solids, agitating a batch, or hand-dipping without working around a closed dome.
Will it work for your job?
This is a batch and storage tank, not a sealed transport vessel. The open top means it is meant for ambient, vented service where you load from above and draw or pump from your own outlet hardware. No fittings are listed in this configuration, so you add your own bulkhead fitting and gasket at the outlet location you choose to match how you fill and empty the tank; confirm the gasket material suits your liquid before you install it. The molded specific gravity rating is 2.0, which means the wall is built to safely hold contents weighing up to roughly twice the density of water. That is unusually high structural margin for a water tank, where 1.0 to 1.5 SG is typical, so this wall carries denser contents than a standard 1.0-SG water tank and gives you real headroom. Full of plain water the tank carries about 5,630 pounds; at its maximum rated content density it is built to carry up to 11,259 pounds. Use those weights when you size the slab or stand under it. A flat, level, fully supported concrete pad is the right foundation for a tank this heavy with an open rim, and our concrete pad sizing guide walks through the ACI framework for getting that right. If you are still deciding on capacity, the Tank Sizing Calculator and Tank Sizing Guide help you match gallons to your batch volume and turnover.
Common uses and a mistake to avoid
Open top storage tanks like this one are a staple for water batching, rinse and process water holding, and industrial water-reuse staging where grey water, rainwater, or condensate is collected and banded by quality before treatment. If you are designing that kind of reuse train, the water reuse tank topology guide covers how to sequence storage and treatment stages, and for rural water-reserve and private fire-protection storage our fire-water reservoir design guide covers NFPA 22 sizing discipline. The mistake to avoid here is treating the specific gravity rating as permission to store anything dense. The 2.0 rating describes the wall's structural margin for weight, not chemical resistance. This listing is a water-service tank; before putting any chemical in it, confirm both the contents' density against that 2.0 figure and the polyethylene's resistance to the liquid. Do not exceed the 11,259 pound maximum rated content weight, and remember an open top tank is vented by design, so it is not appropriate for pressurized or sealed applications.
Freight
This tank ships LTL freight from West Babylon, New York, and freight is quoted live to your ZIP code rather than included in the list price. Get an exact number with our Freight Cost Estimator, or call us at 866-418-1777 and we will walk you through delivery to your site, including any liftgate or limited-access needs. Because of the 66-inch open-top diameter and the tank's weight when full, plan for forklift or crane offload at the receiving end.
