Vintage Medical Equipment

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…