john.r.davies Posted March 12, 2021 Report Share Posted March 12, 2021 PFE = Portable Fire Extinguisher?!? That's not reassuring! OK, I'll do my own research, and Lo! https://ntrs.nasa.gov/citations/20130011664 This describes the ISS version as a "Fine Water Mist" device, no mention of potassium compounds. FWM extinguishers are available as such on Earth, and are safe to use on terrestrial electrical fires as they 'mist' and don't produce a continuous stream of water. Quote Link to post Share on other sites
Graham Martin Posted March 14, 2021 Author Report Share Posted March 14, 2021 Thanks all.... Quote Link to post Share on other sites
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