Blue and white Zylstra Serenity dish (Japan): 4,985 ppm Lead on the food surface of the dish (the blue edging.)

XRF test results for the dish pictured.

Reading #1) on the blue edge of the dish
60-Second Reading

• Lead (Pb): 4,985 +/- 112 ppm
• Cadmium (Cd): 12 +/- 5 ppm
• Tin (Sn): 16 +/- 8 ppm
• Mercury (Hg): non-detect
• Selenium (Se) non-detect
• Barium (Ba): non-detect
• Chromium (Cr): 915 +/- 284 ppm
• Antimony (Sb): 22 +/- 11 ppm
• Zinc (Zn): 853 +/- 45 ppm
• Indium (In): 16 +/- 7 ppm
• Iron (Fe): 1,630 +/- 145 ppm
• Platinum (Pt): 125 +/- 45 ppm
• Cobalt (Co): 135 +/- 58 ppm
• No other metals detected in consumer goods mode.

Reading #2) on the white center of the dish
60-Second Reading

• Lead (Pb): 27 +/- 8 ppm
• Cadmium (Cd): non-detect
• Tin (Sn): non-detect
• Mercury (Hg): non-detect
• Selenium (Se) non-detect
• Barium (Ba): non-detect
• Chromium (Cr): non-detect
• Antimony (Sb): 15 +/- 9 ppm
• Zinc (Zn): 312 +/- 25 ppm
• Indium (In): 14 +/- 6 ppm
• Iron (Fe): 1,438 +/- 127 ppm
• Bismuth (Bi): 54 +/- 9 ppm
• No other metals detected in consumer goods mode.

Reading #3) on the sliver edging of the dish
30-Second Reading

• Lead (Pb): 1,668 +/- 100 ppm
• Cadmium (Cd): non-detect
• Tin (Sn): non-detect
• Mercury (Hg): non-detect
• Selenium (Se) non-detect
• Barium (Ba): non-detect
• Chromium (Cr): non-detect
• Antimony (Sb): non-detect
• Zinc (Zn): 1,265 +/- 103 ppm
• Niobium (Nb): 391 +/- 36 ppm
• Iron (Fe): 3,623 +/- 361 ppm
• Gold (Au): 6,355 +/- 311 ppm
• Bismuth (Bi): 275 +/- 39 ppm
• No other metals detected in consumer goods mode.

Reading #4) on the back mark / logo of the dish
60-Second Reading

• Lead (Pb): 4,960 +/- 112 ppm
• Cadmium (Cd): 7 +/- 5 ppm
• Tin (Sn): 14 +/- 8 ppm
• Mercury (Hg): non-detect
• Selenium (Se) non-detect
• Barium (Ba): non-detect
• Chromium (Cr): non-detect
• Antimony (Sb): non-detect
• Zinc (Zn): 1,111 +/- 50 ppm
• Manganese (Mn): 292 +/- 145 ppm
• Iron (Fe): 4,729 +/- 217 ppm
• Platinum (Pt): 101 +/- 43 ppm
• Cobalt (Co): 2,150 +/- 126 ppm
• No other metals detected in consumer goods mode.

For those new to this website:

Tamara Rubin is a Federal-award-winning independent advocate for consumer goods safety and a documentary filmmaker. She is also a mother of Lead-poisoned children. Tamara’s sons were acutely Lead-poisoned in August of 2005. She began testing consumer goods for toxicants in 2009 and was the parent-advocate responsible for finding Lead in the popular fidget spinner toys in 2017. Her work was also responsible for two CPSC product recalls in the summer of 2022, the Jumping Jumperoo recall (June 2022) and the Lead painted NUK baby bottle recall (July 2022) and was featured in an NPR story about Lead in consumer goods in August of 2022. Tamara uses XRF testing (a scientific method used by the U.S. Consumer Product Safety Commission) to test consumer goods for toxicants (specifically heavy metals), including Lead, Cadmium, Mercury, Antimony, and Arsenic. All test results reported on this website are science-based, accurate, and replicable. Items are tested multiple times, to confirm the test results for each component tested and reported on. Please click through to this link to learn more about the testing methodology used for the test results discussed and reported on this website.