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 GMC-500+ High Readings for Technetium-99m		  New Topic  Reply to Topic
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dcarrion87

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Posted - 03/03/2025 :  21:17:52  Show Profile  Reply with Quote
Hi everyone. Thank you in advance for your patience. We are new to these detectors.

We've recently purchased GMC-500+ to compare it to couple of our existing detectors.

On CS-137 the readings were very similar:



However, on Technetium-99m, it was much higher to the others. Particularly compared to the Ludlum which is our most accurate:



Do you think this is just to do with the different energy levels of tc99m vs cs137 and no compensation for it?

Thanks in advance.
Edited by - dcarrion87 on 03/04/2025 04:00:49
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