This stethoscope was negative for Mercury (Hg), Lead (Pb), Arsenic (As) and Cadmium (Cd) when tested with an XRF instrument. This appears to be an older model (or perhaps a toy?) There is no brand or maker’s mark. All components were tested. I am hoping to be able to test more modern stethoscopes in the…
Vintage Tycos Stethoscope. Tested with an XRF instrument. Year of manufacture is unknown. Tested negative for Lead (Pb), Mercury (Hg) and Arsenic (As), but positive for Cadmium (Cd) at 150 +/- 13 ppm on the rubber tubing component. All components tested. Read more about cadmium toxicity here. Thanks to Marya Shahriary for donating and…
3M Littman Brand Nurse’s stethoscope with red tubing: 1,828 ppm lead (What!!!!?) in the red tubing. New item owned by a professional nurse, tested in 2014. In my personal opinion medical equipment should not test positive for any Lead at all! The amount of Lead that is considered toxic in an item intended for use…