Each V-21+K Wear Metals Standard 300 µg/g, Hydrocarbon Oil, 200 g includes the following elements: Ag, Al, Ba, B, Cd, Ca, Cr, Cu, Fe, K, Mg, Mn, Mo, Na, Ni, P, Pb, Si, Sn, Ti, V, ZnConcentration: 300 µg/gMatrix: Hydrocarbon Oil Volume: 200 g
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