Blue vintage (1990s?) Duplo building block – by Lego: Lead-free, Cadmium-free, Arsenic-free, Mercury-free!
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Blue Block – 30 second reading Barium (Ba): 198 +/- 108 ppm Copper (Cu): 538 +/- 28 ppm Iron (Fe): 38 +/- 24 ppm Titanium (Ti): 8,650 +/- 480 ppm This piece is discussed in detail on this video – link here. I will update this post shortly, but just wanted to start by making sure the XRF readings were…