2008 White Ceramic Starbucks Coffee Holiday Mug: Tested positive for lead with levels as high as 11,200 ppm when tested with an XRF instrument.
An item like this will not likely test positive with a LeadCheck swab. You can read more about that here.
For context: the amount of lead that is considered toxic in the substrate of an item manufactured today and intended for use by children is anything 100 ppm lead or higher (90 ppm 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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