20000 ppm

How worn is your vintage Pyrex? Even with very worn paint, this piece is still positive for a high level of Lead (Pb) at 23,000 ppm.

How worn is your vintage Pyrex? Even with very worn paint, this piece is still positive for a high level of Lead (Pb) at 23,000 ppm.

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Above is a reddish orange vintage Pyrex refrigerator dish with most of the paint worn off. When tested with an XRF instrument, this piece had the following reading for Lead: Lead (Pb): 23,000 ppm. This is a great example of how the colors on these pieces wear. The question is… where does that Leaded color…