Product Overview: Mini Cell by Thermo Fisher
Please see pictures for condition.
Tested Condition Works. There are hairline cracks on the outside chamber but the inner chamber that holds buffer is not affected. Tested with no leaks.  
The Mini-Cell is a vertical mini-protein gel electrophoresis system engineered for simplicity, durability, and leak-free operation—perfect for fast and reliable lab workflows
Quick, clamp-free setup: Prep takes just ~30 seconds—drop in the buffer core and gels, insert the special gel tension wedge, lock it, and you're set
Sturdy and safe: Made of tough polycarbonate with retractable plugs, recessed jacks, and a user-safe lid.
High capacity: Handles up to two Invitrogen mini gels (8 × 8 cm, 1.0 mm or 1.5 mm thick) per run.
Buffer requirements: Upper chamber—200 mL; Lower chamber—600 mL