Leads selenide (PbSe) +99.99% Lead Selenide (PbSe)99.99%, 99.999%1, Purity: 4N ( 99. ... %); 2, Technics (Process): 1Mol Pb + 1Mol Se=1Mol PbSe. Reacted in quartz tube, high-precision analytical balance weighing(Mol ... ; XRD (Please find the COA attached ) 5N Lead Selenide (PbSe) ( All impurity element is below 10 PPM ) 4, Packing ... 8, Usage: Thermoelectric power generation Leads selenide (PbSe) +99.99%