XRF test results for antique Blue Willow style Transor Ware Japanese porcelain child’s tea set

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For those new to the Lead Safe Mama website:

Tamara Rubin is a multiple-federal-award-winning independent advocate for childhood Lead poisoning prevention and consumer goods safety, and a documentary filmmaker. She is also a mother of Lead-poisoned children (two of her four sons were acutely Lead-poisoned in 2005).


Published: Saturday — October 22, 2022
XRF test results for the porcelain tea set are pictured are below.


Some additional links with information for folks new to this site or wanting to do a deeper dive on this subject:


This tea set is safe by all current/ modern standards (specifically the standards restricting the use of toxicants/ toxic metals in items intended for use by children).

Reading #1) On the blue area on the tea cup
60-second reading

  • Lead (Pb): 15 +/- 7 ppm (safe by all standards)
  • Cadmium (Cd): non-detect
  • Tin (Sn): non-detect
  • Mercury (Hg): non-detect
  • Selenium (Se): non-detect
  • Barium (Ba): 2,163 +/- 278 ppm
  • Chromium (Cr): non-detect
  • Antimony (Sb): non-detect
  • Nickel (Ni): 276 +/- 28 ppm
  • Copper (Cu): 64 +/- 24 ppm
  • Zinc (Zn): 56 +/- 15 ppm
  • Manganese (Mn): non-detect
  • Zirconium (Zr): non-detect
  • Niobium (Nb): non-detect
  • Indium (In):non-detect
  • Iron (Fe): 2,216 +/- 100 ppm
  • Platinum (Pt): non-detect
  • Cobalt (Co): non-detect
  • Bismuth (Bi): 102 +/- 12 ppm
  • No other metals were detected in consumer goods mode.

Reading #2) On the plain white of the tea cup
60-second reading

  • Lead (Pb): 19 +/- 11 ppm (safe by all standards)
  • Cadmium (Cd): non-detect
  • Tin (Sn): non-detect
  • Mercury (Hg): non-detect
  • Selenium (Se): non-detect
  • Barium (Ba): 2,080 +/- 456 ppm
  • Chromium (Cr): non-detect
  • Antimony (Sb): non-detect
  • Nickel (Ni): non-detect
  • Copper (Cu): non-detect
  • Zinc (Zn): non-detect
  • Manganese (Mn): non-detect
  • Zirconium (Zr): non-detect
  • Niobium (Nb): non-detect
  • Indium (In):non-detect
  • Iron (Fe): 1,721 +/- 126 ppm
  • Platinum (Pt): non-detect
  • Cobalt (Co): non-detect
  • Bismuth (Bi): 100 +/- 17 ppm
  • No other metals were detected in consumer goods mode.

Reading #3) On the plain white of the dish
60-second reading

  • Lead (Pb): 17 +/- 8 ppm (safe by all standards)
  • Cadmium (Cd): 9 +/- 4 ppm
  • Tin (Sn): non-detect
  • Mercury (Hg): non-detect
  • Selenium (Se): non-detect
  • Barium (Ba): non-detect
  • Chromium (Cr): non-detect
  • Antimony (Sb): non-detect
  • Iron (Fe): 2,223 +/- 155 ppm
  • Platinum (Pt): 42 +/- 27 ppm
  • Bismuth (Bi): 70 +/- 10 ppm
  • No other metals were detected in consumer goods mode.

Reading #4) On the blue area of the dish
60-second reading

  • Lead (Pb): 20 +/- 8 ppm (safe by all standards)
  • Cadmium (Cd): 14 +/- 5 ppm
  • Tin (Sn): non-detect
  • Mercury (Hg): non-detect
  • Selenium (Se): non-detect
  • Barium (Ba): non-detect
  • Chromium (Cr): non-detect
  • Antimony (Sb): 24 +/- 11 ppm
  • Nickel (Ni): 173 +/- 64 ppm
  • Zinc (Zn): 25 +/- 12 ppm
  • Niobium (Nb): 274 +/- 17 ppm
  • Indium (In): 20 +/- 6 ppm
  • Iron (Fe): 5,085 +/- 232 ppm
  • Platinum (Pt): 45 +/- 29 ppm
  • Cobalt (Co): 5,461 +/- 209 ppm
  • Bismuth (Bi): 98 +/- 11 ppm
  • No other metals were detected in consumer goods mode.









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