When tested with an XRF instrument this Starbucks Coffee Brand Ceramic “You Are Here” Collection “California” Mug (c. 2017) had the following readings:
- Lead (Pb): 6,397 +/- 184 ppm
- Cadmium (Cd): Non-Detect / Negative
- Arsenic (As): Non-Detect / Negative
- Mercury (Hg): Non-Detect / Negative
The amount of Lead that is considered toxic in the substrate of an item manufactured today as intended for use by children is anything 100 ppm Lead or higher (90 ppm Lead or higher in the glaze.) Dishes and glassware are not generally regulated for lead levels as detectable with an XRF because they are not considered to be “items intended for use by children.”
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