For an economical alternative to stainless steel, choose the Thermo Scientific™ Nalgene™ Lightweight Graduated Cylindrical LLDPE Tank with Cover. Ideal for less rigorous applications, these linear, low-density polyethylene tanks offer excellent resistance to stress cracking. The cover features an external flange that extends beyond the rim when used as a liner for steel drums. Available in sizes ranging from 5 to 55 gal. (19 to 208L).