The global impact of COVID-19 on our people and the global economy is significant, and Watlow has taken a comprehensive approach to deal with the current crisis. Our contingency planning includes protecting our team members, communicating often with our customers and partners and maintaining the continuity of supply lines.

At the beginning of the pandemic, we set two priorities that guide our responses and decisions: the health and safety of our team members while continuing to supply essential products needed by our customers.

If you have questions about how the pandemic is impacting Watlow or Watlow’s response, please contact your Watlow representative.

Heaters Warm Cold Blood And Physiological Fluids


Warming blood and other physiological fluids requires heating water in a plastic reservoir and pumping it through a riser stand and into a disposable heat exchanger. The water is then rapidly circulated through the heat exchanger to transfer heat and warm the blood or required physiological fluid. This customer required a secondary high limit cut-out device internal to the cartridge heater.


A FIREROD® heater, provided with internal thermostat, was developed with construction conforming to the intent of UL® 544 specifications. The FIREROD's internal thermostat provided the secondary high-limit control necessary to prevent melting the plastic reservoir in the event of a malfunction.

UL® is a registered trademark of the Underwriter Laboratories, Inc.