What are the exact XRF readings for this dish?
When tested with an XRF instrument the dish (brand new off the Fred Meyer shelf, purchased in 2019) pictured here (Made in the USA Corelle white glass with the “Prairie Garden Gray” pattern) had the following readings (note: given the shape of the dish and placement of the pattern it was difficult to get a single color in a reading):
Scope focused on a dark blue area of the dish:
- Cadmium (Cd): 15 +/- 6 ppm
- Chromium (Cr): 420 +/- 104 ppm
- Zinc (Zn): 573 +/- 45 ppm
- Iron (Fe): 686 +/- 131 ppm
- Vanadium (V): 793 +/- 92 ppm
- Titanium (Ti): 11,000 +/- 400 ppm
- Cobalt (Co): 506 +/- 84 ppm
Scope focused on a gray area of the dish:
- Cadmium (Cd): 16 +/- 7 ppm
- Chromium (Cr): 313 +/- 84 ppm
- Zinc (Zn): 141 +/- 27 ppm
- Iron (Fe): 688 +/’- 150 ppm
- Vanadium (V): 320 +/- 55 ppm
- Titanium (Ti): 4,415 +/- 226 ppm
All tests were done for a minimum of 60 seconds on a freshly calibrated instruments. Tests were repeated multiple times to confirm the results. Test results reported here on this blog are science-based and replicable.
Is Cadmium a problem?
Cadmium is a known carcinogen which, in my opinion, does not belong in any amount in any kitchenware (especially in the dishes we eat off of every day with our family!) This is one of the reasons I avoid the Corelle dishes with painted decorative elements (of any color.) You can read more about Cadmium toxicity here on this link. That said, the amount of Cadmium that is considered toxic and illegal in the country of Denmark (the only country I am aware of that has a total Cadmium content limit for consumer goods) is anything 75 ppm or higher. Washington State (here in the U.S.) has a Cadmium toxicity level (for consumer goods) of 40 ppm and higher. As a result the amount of Cadmium I detected in this dish is within safe levels by all current applicable standards.
To see more Corelle pieces I have tested (both vintage and new) please click this link.
To see the dishes I recommend and use every day with my family, please click this link.
Thank you for reading and for sharing my posts.
As always, please let me know if you have any questions.
Tamara Rubin
#LeadSafeMama
I purchase my corelle dishes in 1997. Where can I find out if the two designs I have contain lead?
Where can I find a list of Corelle Dishware designs by the year or how can I tell if my dishes are safe or not? Some were gifted to me.
I have had the Rosemarie Corelle Dishware for at least 30 years. I can’t find it in any of the unsafe designs posted. Is it a problem?
Also is the a newly purchased set of Country Cottage a problem? Thank you so much!
Karen Fraser