Brick Oven Stoneware: Tung Guan China: Lead-free, Arsenic-free, Cadmium-free! (Good choice!)
White center of dish:
White center of dish:- Barium (Ba): 14,000 +/- 800 ppm
- Zinc (Zn): 17,200 +/- 700 ppm
- Iron (Fe): 655 +/- 172 ppm
- Bismuth (Bi): 93 +/- 44 ppm
Blue edge of dish:
- Barium (Ba): 9,478 +/- 668 ppm
- Tin (Sn): 265 +/- 71 ppm
- Zinc (Zn): 13,800 +/- 600 ppm
- Iron (Fe): 898 +/- 184 ppm
- Bismuth (Bi): 103 +/- 44 ppm
The back mark (logo on the back side of the dish) also tested similarly to the results above (negative for Lead, Mercury, Cadmium, Arsenic and Antimony.)
Never Miss an Important Article Again!
Join our Email List
I just recently read about lead in vintage ceramics and started researching my brick oven stoneware set that I have been using for 2 years. I am very concerned now but I came across this test of yours. My brick oven stoneware has a different pattern of various colored flowers around the ceramics as well as in the middle of each plate/bowl. The back has the logo but instead of Tuan Guan China, it says made in China. How do I know if the different colors have lead or if your test concludes that this brand does not contain lead? I have a baby and we have been using this as a family for 2 years. Please advise. Thank you! Annie