Chem-Tainer 300 Gallon 20 Degree Plastic Cone Bottom Tank with Poly Stand

The Chemtainer TC3198JP is a 300-gallon, 20-degree closed-top cone bottom tank sold as a package with its matching poly stand, molded in natural white polyethylene, rated to a 1.5 specific gravity, and FDA approved. The full assembly stands 98 inches tall on a 31-inch diameter footprint, so the cone discharge sits at working height without a pit or platform. This is a full-drain vessel: the 20-degree cone and elevated stand let viscous or settling chemistries evacuate cleanly, which is why it shows up in searches for a 300 gallon Chemtainer degree cone bottom tank with stand.

Will it hold your batch

The tank weighs 115 lb empty and carries an 8-inch lid for filling and inspection. Sizing is where cone-bottom buyers get surprised: 300 gallons of plain water already loads the stand at roughly 2,502 lb, and at the tank's full 1.5 SG rating the contents can reach about 3,753 lb. Confirm your floor, anchoring, and the poly stand's footing are rated for the heavier of those two numbers before you fill. Run your exact volume and fluid weight through the Tank Sizing Calculator and the Tank Sizing Guide. One gap to close before you plumb: the outlet size is not published for this SKU, so call 866-418-1777 to confirm the cone bulkhead before you order a valve or fitting. If you are cross-shopping other cones, the 550 gallon 20-degree guide matches this tank's cone angle, while the 300, 310, and 175 gallon guides are 30-degree cones — a steeper drain that settles differently, so read them as reference rather than a direct match.

Chemical compatibility

This tank is molded polyethylene rated to 1.5 specific gravity, and the resin is recorded as HDLPE with a pending confirmation — confirm HDLPE versus XLPE with us before committing to chemical service, since the two resins can differ in chemical resistance. Compatibility below is drawn from the Snyder Industries OEM chemical-resistance chart and is concentration- and temperature-specific. Those chart figures assume ambient service; no maximum operating temperature is published for this SKU, so heated chemistries must be confirmed by phone. Verify your exact chemical, concentration, temperature, and both fitting and gasket material against the chart before ordering.

Chemistries this 1.5-SG tank handles include acetic acid (60%), aluminum sulfate (50%), calcium chloride (40%), DEF (32.5%), ferrous sulfate (20%), magnesium chloride (30%), sodium carbonate (30%), and urea solution (50%). Most call for PVC fittings with EPDM gaskets; DEF wants 316SS with EPDM, and acetic acid and urea run PP or PVC with EPDM. DEF and urea only need a 1.35-SG tank, so this 1.5-SG vessel covers them with margin. Ozonated water up to 10 PPM is also compatible at this SG — it has no dedicated reference page, so confirm that pairing by phone.

Some chemistries need a heavier tank than this one. Ethylene glycol, ferric chloride, ferric sulfate, hydrochloric acid, hydrofluoric acid, hydrofluosilicic acid, hydrogen peroxide, peracetic acid, phosphoric acid, polyaluminum chloride, potassium carbonate, potassium hydroxide, propylene glycol, sodium bisulfate, sodium bisulfite, sodium hypochlorite, sodium thiosulfate, sulfuric acid, and zinc orthophosphate each call for a 1.9-SG tank — several of those (peroxide, sodium hypochlorite, the strong acids) also require Viton or Aflas gaskets rather than EPDM. If your fluid is on that list, step up to a higher-SG cone tank and don't force it into this one. The full Chemical Compatibility Database has each pairing.

Freight

The TC3198JP ships LTL from the Hanford, CA plant, freighted live to your ZIP — the 98-inch stacked height means it moves standing on a pallet, so confirm dock or forklift access. Get a rate with the Freight Cost Estimator, review the specs on this page and the technical drawing against your install, and call 866-418-1777 if you want us to confirm the resin, outlet, fittings, and stand rating for your chemical before you order.