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 2.GQ Geiger Muller Counter
 Newbie test sources?
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66 Posts

Posted - 04/03/2018 :  12:17:07  Show Profile  Reply with Quote
I just ordered the 500+ because I always wanted a gieger counter to add to my electronics tool box. The prices of these units puts them well in the consumer price range so now was a good time. I'd like to have a test source but honestly the price of tiny pieces of uranium ore is ridiculous. What are you guys and gals using? Also could someone recommend a reliable website for radioactive samples

Jim Whitaker
Reply #1


417 Posts

Posted - 04/07/2018 :  07:39:29  Show Profile  Reply with Quote
Take a household item like garden fertilizer, or any other product with lots of Potassium in it. Read my "GeigerLog Potty Training ..." for details; downloadable from here:

And better than with any strange Uranium or else source, you know what you have and can do real physics experiments!
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Reply #2


59 Posts

Posted - 04/07/2018 :  09:09:04  Show Profile  Reply with Quote
You can also purchase Uranium glass beads that used to be used for jewelry. These are small and can be stored in a small lead container when not needed.
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Reply #3


202 Posts

Posted - 04/09/2018 :  09:03:14  Show Profile  Reply with Quote
Or go outside and search for granite. It contains small amounts of Uranium and could give a reading of about 100, maybe.

GMC-300E+ V4.20 with sbt-11a alpha tube

My statements are "stuff-a-hobbyist-says" and not in any way professional.
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