An Icon of the Geiger Counter World, Don Ludlum, 1932 to 2015

In the world of Geiger Counters, Don Ludlum built quite a legacy.  Ludlum Instruments, founded by Don, is arguably one of the largest and most successful radiation detection companies in the world.  Ludlum Instruments has a strong reputation for quality and dependability.  Although I have known and respected many people from the Ludlum “family,” I never met Don.  I wish now I had taken the time to drive over to Sweetwater, Texas and shake his hand.  Everyone I have met who knew him describe him as a fair, honest and kind man.  He definitely left an impact in the world of radiation detection.   Condolences to all who knew and loved Don.  You can learn more about Don and Ludlum Instruments at


About Dan Sythe

Dan is CEO of IMI (International Medcom, Inc.). He has been designing and manufacturing innovative radiation detection instruments for over 40 years. Many thousands of these instruments are in use throughout the world in support of public safety, security, nuclear arms control, medical and laboratory safety programs, educational programs, and personal safety applications.
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