Here’s an a link to this product on Amazon: https://amzn.to/2VlUJ6U
When tested with an XRF instrument these Mack’s Pillow Soft Silicone Putty Earplugs had the following readings (with each test done for at least 60 seconds and all metals decade by the XRF listed below):
- Barium (Ba): 895 +/- 169 ppm
Barium was the only metal found in these earplugs! If a metal is not listed above, it was not detected by the XRF instrument. Note: The plastic case was also tested and was also negative for any toxicants.
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