The Chem-Tainer 700 Gallon Open Top Batch Storage Tank (SKU TC5570AA) is a cylindrical, open-top polyethylene vessel built for batch mixing and bulk storage where you need top access for filling, manual additions, or agitation. It holds 700 gallons, stands 70 inches tall on a 55-inch round footprint (55.0 x 55.0 in), and is molded in natural white polyethylene. If you have been searching for a white open top tank or a straightforward open top storage tank you can load from the top, this is that tank.
Will it work for your job?
Filled with water, this tank carries roughly 5,838 lb of contents; at its full 1.9 specific-gravity rating it is engineered for up to about 11,092 lb of contents, so it has real headroom for fluids heavier than water. That 1.9 SG rating is the number to match against your liquid: take your fluid's specific gravity and confirm it sits at or below 1.9 before you commit. The open top makes batching, blending, and cleanout easy, but it also means this is not a sealed or pressurized vessel - plan for a cover if your contents need protection from debris, evaporation, or weather. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm 700 gallons and the 70 in height fit your space and your fill schedule. Dimensions, the molded base, and wall detail are shown in the technical drawing on this page. This tank ships as an open-top vessel with no pre-installed fittings in our data; if you need a bulkhead outlet or other fitting added, call 866-418-1777 and we will spec it with you.
The mistake to avoid
The two most common errors with an open top tank like this are specific gravity and support. First, do not assume the 1.9 rating means any liquid is fine - it means the wall is built to carry contents up to 1.9 SG, so a denser slurry or brine still has to be verified against that ceiling. Second, an open top cylindrical tank carries its full 5,838 lb water weight (more with heavier contents) on that 55-inch round footprint: it needs a flat, fully supporting, level pad rated for the loaded weight. A tank set on an uneven or undersized base is the failure you can prevent before delivery. For above-ground siting on concrete, the concrete pad sizing guide walks through the framework. If your batch carries settling solids, a cone-bottom may drain cleaner; see our 30 vs 45 degree cone-bottom drainage comparison.
Static storage and reuse service
Open-top batch tanks also do well as static water reservoirs. If this tank is going into a water-reuse, rainwater, or grey-water train, the industrial water reuse tank topology guide covers how to band and sequence storage by quality. For rural or remote static fire-water storage, our fire-water reservoir design guide walks through NFPA 22 sizing discipline and freeze protection for cold climates.
Freight
This tank ships LTL freight, quoted live to your ZIP. It ships from the nearest Chem-Tainer plant - Hanford, CA or Hummelstown, PA - so your transit and cost depend on which is closer to you. Get a real number before you order with our Freight Cost Estimator, or call 866-418-1777 and we will quote it for you and confirm the right tank for your batch process.
