StacksVerified U.S. regulatory reference

21 CFR §870.5325

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Identification. A defibrillator tester is a device that is connected to the output of a defibrillator and is used to measure the energy delivered by the defibrillator into a standard resistive load. Some testers also provide waveform information.
  2. (b)Classification. Class II (performance standards).