ColdMark Indicators

ColdMark Irreversible Descending Temperature Recorders monitor temperature-sensitive products during storage or transit.

Encased in a tube, the ColdMark uses a chemically activated dye that changes from clear to violet when exposed to low temperatures. Once activated, the violet color provides a permanent exposure record.

*ColdMark irreversible descending temperature indicators must be maintained at least 5°C above the response temperature and must ship via 2 Day Air or faster and may seasonally incur an additional charge for insulated packaging.