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 2.GQ Geiger Muller Counter
 what can i use to test my detector		  New Topic  Reply to Topic
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BuzzKiller

USA
2 Posts
Posted - 10/11/2013 :  14:01:03  Show Profile  Reply with Quote
I just got my GMC-300E and I would like to know what I can use to check if it's working right. Any thing will help Thanks

BuzzKiller
BuzzKiller
Reply #1

maverick06

USA
4 Posts
Posted - 10/11/2013 :  16:12:35  Show Profile  Reply with Quote
something radioactive!

background is about 0.1 usv to 0.2 usually.
smoke detectors might make it go up a tiny bit.
take it on an airplane and its way high (turn off the alarm)
xray machines
thermonuclear war
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Reply #2

BuzzKiller

USA
2 Posts
Posted - 10/11/2013 :  18:39:38  Show Profile  Reply with Quote
Thanks for your info. I'm getting a reading of about 20 CPM / 0.012mR/H...whatever that last measurement is. That is with it setting on my coffee table in the family room. Thanks again for the post....
BuzzKiller
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Reply #3

seb

10 Posts
Posted - 10/19/2013 :  09:04:36  Show Profile  Reply with Quote
Common safe sources are vaselibe glass, fiestaware. They are easily found on eBay, at cheap price. I you do long measurments with software, Lo-Salt (potassium chloride) is also a good source and can be found in every supermarket :)
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