First Responders Can Now Quickly Prioritize and Act on Dangerous Substances

Military and civilian first responders who use handheld instruments to identify unknown chemicals, explosives, and toxic materials can enhance their capability with a new software upgrade for Thermo Scientific FirstDefender RM and FirstDefender RMX handheld analyzers.

The Thermo Scientific FirstDefender RM/RMX 4.1 software includes “tagging” — a feature that enables users to prioritize the chemicals of greatest concern, providing focused analysis on select substances, while maintaining a broad identification capability of more than 11,600 chemicals. In short, this enables lower detection limits and on-screen notification for tagged items. The FirstDefender RM/RMX 4.1 software update brings the tagging feature to global customers through Arabic, Chinese, French, German, Japanese and Russian language configurations.

Recognized for its field-proven identification capabilities, Thermo Scientific FirstDefender instruments provide fast, reliable, non-contact and non-destructive analysis of unknown chemicals, speeding response and increasing responder safety. To learn more about the FirstDefender RM/RM 4.1 software update, visit

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