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Forums > Back > Old lens amateurs watch our for radioactive lenses
Brightcolours
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#2
10-28-2016, 11:22 AM
Thorium oxide is not replaced by fluorite. 

 

And you do not have to watch out when you do have a lens with a radioactive element either, in normal usage they pose no extra risk.

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Old lens amateurs watch our for radioactive lenses - by Brightcolours - 10-28-2016, 11:22 AM

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