praseodymium oxide 1,high purity:99%--99.999% 2,wide range of uses 3,quality best 4,competitive price RE-impurities(%)Non- ... like: Lanthanum Oxide, Cerium Oxide, Praseodymium Oxide, Neodymium Oxide, PR+ND Oxide, Samarium Oxide, Europium Oxide, Gadolinium Oxide, Yttrium Oxide, Terbium Oxide, Dysprosium Oxide, Holmium Oxide, Erbium Oxide, Thulium Oxide, Ytterbium Oxide, Lutetium Oxide and so ...