To see more Tupperware items I have tested, click here.
When using an XRF instrument to test this plastic cup (which is made of solid yellow plastic with no painted markings or decorations) it had the following readings:
- Lead (Pb): Negative/Non-Detect (Nd)
- Cadmium (Cd): Negative/Non-Detect (Nd)
- Arsenic (As): Negative/Non-Detect (Nd)
- Chromium (Cr): Negative/Non-Detect (Nd)
- Antimony (Sb): Negative/Non-Detect (Nd)
- Barium (Ba): 183 +/- 73 ppm
- Zinc (Zn): 129 +/- 9 ppm
- Copper (Cu): 21 +/- 11 ppm
- Nickel (Ni): 14 +/- 7 ppm
- Iron (Fe): 40 +/- 15 ppm
- Titanium (Ti): 3,682 +/- 258 ppm
All test results reported on this blog are replicable and accurate. The test result set above was for a test of this item for a full 60 seconds (one minute) in “Consumer Goods” mode. If a metal is not listed above, it was not detected by the XRF instrument in this mode.
A word of caution, given it is nearly impossible to tell the exact year of manufacture of a Tupperware product (because they are not marked in any way that would indicate the year of manufacture), the fact that this yellow cup is negative for Lead, Cadmium, Mercury and Arsenic does not mean that other yellow Tupperware items will also be negative. More testing and research is necessary to make that determination, however most examples of the vintage yellow Tupperware products that I have tested have been positive for at least one toxicant.
If you have any information that could help date this particular item, that would be very much appreciated. Thank you for supporting this work in this way. Based on the color and the presence (or absence) of toxicants (and the research I have done to date) I would assume this possibly dates from the late-1980s.
If you appreciate this work and would like to see more test results like this, please consider contributing to the GoFundMe for my advocacy work: http://www.GoFundMe.com/LeadSafeMama. I do “take requests” as I live near quite a few antique stores and could easily go purchase something that you might want tested if the cost of the item were covered and a contribution that also helped with the cost of testing was made. Please e-mail me if you are interested in having me purchase something specific to test: TamaraRubin@mac.com
To learn more about participating in the regular (non-Tupperware related!) consumer goods testing I do with the support of my readers, please click this link.
As always, thank you for reading and for sharing my posts.
Please let me know if you have any questions.
Tamara Rubin
#LeadSafeMama
Click here for the overview post showing all Tupperware tested so far. 
I have had this yellow cup way before the 1980’s. I would put it in the early 70’s.
Hi Loretta! Thank you so much for commenting. That is super helpful information!
Tamara
Got these cups in a picnic set as a gift early 80’s They were heavier weight and had no seal as they were the “tea/coffee” as well as cold drink… The rest of the set was a rectangular box, square box, plates I think…