Stop using your vintage Tupperware NOW. These measuring cups are positive for 2,103 ppm Lead + 250 ppm Arsenic.
Pyrex® Glass Measuring cup (c. 1994): 6,253 ppm Lead in red Outside Markings (90 ppm is unsafe for kids)
Pyrex Glass Measuring Cup: Positive for 326 ppm Cadmium in the Red Exterior Writing. 75 ppm is illegal in Denmark.
Purple Pyrex glass measuring cup: 20,700 ppm Lead (90 is unsafe*) +175 ppm Cadmium (Yum! What are you baking with?)
Anchor Hocking Measuring Cup: 36,300 ppm Lead + 580 Cadmium. Are the markings on YOUR measuring cup worn?