Corningware 3-Quart Casserole Dish: 29,900 ppm Lead + 602 ppm Cadmium [90 ppm Lead is considered unsafe for kids.]

Corningware 3-Quart Casserole Dish with Floral Pattern: 29,900 ppm Lead + 602 ppm Cadmium [For context, 90 ppm Lead is considered unsafe in items for kids.]

When tested with an XRF instrument this 3-Quart Corning Ware casserole dish had the following reading set (reading was taken on the painted floral pattern on the exterior of the dish):

  • Lead (Pb): 29,700 +/- 800 ppm
  • Cadmium (Cd): 602 +/- 36 ppm
  • Mercury (Hg): Non-Detect (ND)
  • Barium (Ba): Non-Detect (ND)
  • Chromium (Cr): Non-Detect (ND)
  • Antimony (Sb): 95 +/- 31 ppm
  • Selenium (Se):  Non-Detect (ND)
  • Bromine (Br): 106 +/- 12 ppm

The plain white interior of the dish (and of other dishes like this) is consistently negative for Lead and Cadmium.

There was no regulatory standard in place for total lead content in decorative elements in cookware like this at the time it was manufactured (especially total lead content as detectable with an XRF instrument.)

For context, the amount of lead that is considered unsafe in a newly manufactured item made today and intended to be used by children is anything that is positive for 90 ppm Lead or higher in the paint or coating. Again this piece is positive for Lead at 29,700 ppm.

While these vintage casserole dishes have never been studied to determine whether or not they are possibly poisoning the user (or at least whether or not they are possibly contributing to background blood Lead levels for people who cook food in these vessels) they have also not been studied to confirm they are safe. With the levels of Lead being this high, I would never use one of these in my home. I would especially not use something like this for food-preparation purposes. 

Click here to read my post about safer choices for casserole dishes.

To see more vintage Corning Ware casserole dishes that I have tested, click here.

As always, please let me know if you have any questions. 

Thank you for reading and for sharing my posts.

Tamara Rubin
#LeadSafeMama

Corningware 3-Quart Casserole Dish with Floral Pattern: 29,900 ppm Lead + 602 ppm Cadmium [For context, 90 ppm Lead is considered unsafe in items for kids.]

3 Responses to Corningware 3-Quart Casserole Dish: 29,900 ppm Lead + 602 ppm Cadmium [90 ppm Lead is considered unsafe for kids.]

  1. Liz March 4, 2019 at 8:43 pm #

    What about white corningware items that do not have any paint on them? Are these likely to be safe since it seems lead is only found in the painted decorations?

    • Tamara March 4, 2019 at 9:05 pm #

      Hi Liz,

      Yes that is correct. They are likely to be lead-free (or at least lead-safe/low-lead) if they are newer and have no painted decorations.

      Tamara

  2. Liz March 4, 2019 at 10:22 pm #

    What if they are older? I have a few items like this that were passed down to me and I don’t know how old they are. Trying to decide whether to keep or not.

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