This is a Dansk brand “Bistro Cafe” Belgian Blue Ceramic Plate, made in Portugal. The owner of this item told me that it was purchased at a Dansk outlet store in 2005. When tested with an XRF instrument it had the following readings:
Blue Glazed Edging of Plate:
- Lead (Pb): 4,555 +/- 114 ppm
- Chromium (Cr): 1,531 +/- 103 ppm
- Tin (Sn): 255 +/- 18 ppm
- Zinc (Zn): 58 +/- 18 ppm
- Nickel (Ni): 276 +/- 94 ppm
- Iron (Fe): 3,621 +/- 243 ppm
- Vanadium (V): 247 +/- 37 ppm
- Titanium (Ti): 608 +/- 64 ppm
- Cobalt (Co): 11,300 +/- 400 ppm
Food Surface Center of Plate (White Glazed Area in Center of Plate):
- Lead (Pb): 335 +/- 23 ppm
- Iron (Fe): 2,733 +/- 222 ppm
- Bismuth (Bi): 58 +/- 13 ppm
- Vanadium (V): 85 +/- 20 ppm
- Titanium (Ti): 229 +/- 33 ppm
- Indium (In): 29 +/- 9 ppm
Metals not listed were not found to be present by XRF testing. Testing was done for a minimum of 60 seconds.
For context the amount of lead considered unsafe in the glaze, paint or coating of a modern item made today and marketed to be used by children is anything that is 90 ppm Lead or higher. There is no current standard for allowable Lead levels in dishware as detectable with an XRF instrument.
As with all XRF testing, a high positive reading is NOT a definite indicator that the dish may be leaching Lead. It is, however, possible for dishes with this high Lead to leach and I therefore would never eat off a dish like this.
As always, please let me know if you have any question.
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