Originally published: April 17, 2018
Updated: December 28, 2019
Everybody’s grandmothers seems to have had these!
These butterfly pattern vintage “Corelle by Corning” (Made in New York) bowls tested positive for Lead at 23,300 ppm when tested with an XRF instrument (this is the reading of a test done directly on the decorative pattern elements on the outside of the bowl).
To learn more about the concern for Lead in dishware, Click HERE.
The plain white parts of these bowls (the base material / substrate) is generally Lead-free (and Cadmium-free too!) You can see the full XRF test results of a plain white Corelle bowl if you Click HERE.
To learn more about XRF testing, Click HERE.
For context: the amount of Lead that is considered toxic in an item intended for children (when tested with an XRF instrument) is anything 90 ppm Lead or higher in the paint or coating. [Or anything 100 ppm Lead or higher in the substrate / base material.]
There is no regulation limiting the total Lead content in dishware, as detectable with an XRF instrument. Modern dishware regulations focus on leach testing and other measures of toxicity, not XRF testing — yet.
Antiques and vintage items were also generally not regulated for the presence of toxicants (if regulated at all) to any levels that could be considered protective of consumers’ health using modern scientific standards.
Related: What should I do if my dishes test positive for lead? Click HERE.
A goal for my advocacy is that all dishware be required to test negative for Lead by any and all testing methodologies, including XRF testing.
If a toy is considered toxic for use by a child using a specific testing methodology (for example, toys are toxic for Lead with XRF readings in the following range: “90 ppm Lead and above”), why is it that this same testing methodology and standard is not used across the board for all consumer goods – especially dishware, which is used by humans of all ages (including children of all ages) and used across generations?
Every version of this “Butterfly” pattern that I have tested is either very high Lead OR very high Cadmium (which is also toxic/carcinogenic!) To learn more about the concern for Cadmium toxicity, Click HERE.
Most vintage Corelle pieces with printed decorative patterns are high in Lead. Click HERE to see some more examples of these pieces and their specific Lead readings (as detected with an XRF instrument.)
As a mother of Lead-poisoned children, I personally would never use this type of decorated dish in my home, and would prefer not to use it if I was visiting your home. [Keep some paper plates on hand in case I come visit!]
Do you want to find a modern, Lead-free Corelle pattern that is suitable and safe for you to hand down to YOUR grandkids? Check out these (they are my favorite Lead-free option on Amazon!)*
As always thank you for reading and for sharing my posts. Please let me know if you have any questions!
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