Ranger™ Alternative

Considering a purchase of a 3M Ranger™ blood/fluid warmer?

Discover why hundreds of hospitals converted from Ranger to the Warrior line of next-generation blood/fluid warmers:

With the Warrior line of Warmers, you can:

Max Delivery Rate at 4°C input [1]
290 ml/min
- Pediatric: 100 ml/min
- Standard: 150 ml/min
- High Flow: TBD (contact manufacturer)
Max Delivery Rate at 20°C input [1]
500 ml/min
- Pediatric: TBD (contact manufacturer)
- Standard: TBD (contact manufacturer)
- High Flow: 500 ml/min
Warming Speed
Within seconds
2 minutes
Warming with Intense Push/Pull Resuscitation Techniques [2]
Performance validated
See note [3]
Priming Volume
19 ml
- Pediatric: 20 ml
- Standard: 39-44 ml
- High Flow: 150 ml
Location of Warming Element vis-a-vis Patient [4]
Close to patient
Remote from patient [5]
Set Temperature
38°C, with tolerances
41°C, with tolerances [5]
The Disposable Unit Can Be Easily Disconnected from One Device and Reconnected to the Next Device [4]
Yes, within seconds
Number of Administration Sets
Battery Option
Aluminum Free
Service Requirements
Inspection in 5 years
Twice a year


[1] The term “Max Delivery Rate” means “the maximum flow rate in which target temperature – typically 38°C — will be reached”.[2] E.g. hand pump, LifeFlow-like devices, etc.[3] The cassette’s resiliency to sustain the extreme pressure that is often generated by intense push-pull resuscitation techniques need to be validated. It is recommended to consult with the manufacturer.[4] The longer the distance, the more likely that fluids will get colder as they travel towards the patient, especially at low flows.[6] Most probably 41°C output intended to compensate for long distance from the warming element to the patient.[7] To facilitate warming during interfacility and intrafacility transports.

DISCLAIMERS: The table above compares selected product attributes of Ranger™ (a registered trademark of 3M™) with those of the Warrior AC configuration (manufactured by Quality In Flow, or QinFlow). Quality in Flow is not affiliated with 3M™. The benchmarking is based on publicly available information and the respective device’s Instructions for Use (IFU) / User Manual, where applicable. The Ranger™ IFU / User Manual used for this study may not be the most updated version. Further, the IFUs / User Manuals used for this study may be changed by the manufacturer as the products evolves; QinFlow may not know about such updates and in any event does not undertake to update the information in the table upon such changes. Unless stated differently, the benchmark information was commissioned by QinFlow alone and not all data points were independently verified. 3M™ was not part of this benchmark study. Use of the Warrior is subject to QinFlow’s terms of use. This benchmark study does not intend to cover all the differences between the devices. QinFlow does not guarantee that Ranger™ will achieve the results or perform as mentioned in the benchmark study. QinFlow only warrants the information published in its IFUs (performance data points above are in accordance with the CE marks of each Warrior configuration; for FDA-cleared IFU, where applicable, contact QinFlow). Please contact 3M™ for clarifications.
Found an error? Please let us know at info@qinflow.com