The Chem-Tainer 90 Gallon Open Top Batch Storage Tank (SKU R182448A) is a rectangular open top tank built for batch mixing, dosing, and staged storage where you need quick top-side access to add product, agitate, or scoop. It stands 48 inches tall on a compact 18 x 24 inch footprint, so it fits tight against a wall or in a corner of a process line while holding a full 90 gallons of working volume. The open top lets an operator pour in, stir, or drop in a mixer without fighting a closed lid, which is why people building a batch station search for an open top tank, a rectangular open top tank, or simply an open tank.
Will it work for your job
This is a natural white polyethylene tank, so you can read your level and your fluid through the wall, a real help when you are tracking a batch by eye. The body carries a 2.0 specific gravity rating, which is the headline spec here: the wall is engineered to hold contents up to twice the weight of water. Full of plain water the tank weighs about 751 pounds, and the wall is rated to carry contents up to roughly 1,501 pounds at the 2.0 SG limit. That heavy 2.0 rating is the reason to choose this unit over a lighter 1.5-rated open top if you are batching a dense slurry or a heavy solution rather than plain water. One caution on what that number means: the SG rating governs contents weight only, not chemical compatibility, so if you are batching a specific chemical, verify the polyethylene resin against that chemical separately. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm the 90 gallon working volume and headroom match your batch size before you order.
Setup, stability, and the mistake to avoid
The 48 inch height on an 18 x 24 inch base gives this tank a tall, narrow stance and a high center of gravity. Set it on a flat surface that carries the entire footprint with continuous, level support, because when it is full to roughly 751 pounds of water the whole load concentrates on that compact 18 x 24 inch base. If the tank will sit exposed, consider strapping or anchoring it. For a poured pad, see our guide on concrete pad sizing for above-ground polyethylene tanks. The mistake to avoid: do not read the open top as an open weight budget. The 2.0 SG rating is a contents-weight ceiling, not an invitation to overfill, and an unsupported or rocking base under a tall narrow tank is the fastest way to stress the wall. Confirm your actual fluid weight against the 1,501 pound rated ceiling before you commit to a batch size.
Freight
This tank ships LTL freight from West Babylon, NY, and freight is quoted live to your ZIP. Get a real number before you buy with our Freight Cost Estimator, or call 866-418-1777 and we will quote it for you. If this open top batch tank is part of a larger water-handling setup, our industrial water reuse tank topology guide walks through how staged storage tanks fit into a reuse train.
