Review on 🧪 Optimized Geiger Counter Test by United Nuclear by Jeff Leu

I got a geiger counter and wanted to test it and it worked very well! The highest CPM I could find at home was 120 cpm (warmed up, actively charged 18650 batteries from any manufacturer do this for some weird reason oO), but it was around 3500 (21.5 uSv/h)! But it falls on the background about 3cm from the source, so while it gives very tangible readings on sensitive modern Geiger counters, it's also fairly safe - it's not something to keep in your wallet or under your pillow, but otherwise it is a check. a source powerful enough to move the needle even on old long range meters without fear for safety.