Cycle Testing Reusable Gel Packs: What 50 Freeze-Thaw Rounds Actually Show

Every reusable pack supplier claims 100 cycles. Almost none of them can show you the data, and the few who can usually tested with water rather than gel, at -18°C rather than -25°C, and without the wash step that a real return loop imposes. Fifty cycles is a reasonable first milestone, and the resul…