1、GB/T2526-2008表1产品牌号081050081040081035081030RE0,不小于99999999Gd2O3/REO,不小于99.99999.9999.9599.9La:O0.0001CeOz0.00005PrsOu0.00005Nd2O0.0001HozO为0.00005合量0.0040稀合量0.05合量0.1ErzO0.00005土(Sm2O3+(Sm2O3+Tm2 O0.00005菜Eu2O,+EuzO3+质Yb2 O30.00005TbO,+TbO,+杂/REOLvzO30.00005Dy:O3+Dyz O,+化学成分（质量分数）/%质Y0)Y20)Sm2 O30.0
2、00050.0010量Eu2O0.00010.0015Tb.Oz0.00010.0015不DyzO0.00010.0010于Y2Og0.00010.0010Fe:O0.00020.00050.0020.003SiOz0.0030.0050.0050.006非CaO0.00050.0030.0050.005稀CuO0.00020.00050.001一土PbO杂0.00030.0010.001质NiO0.00050.0010.001Al2O,0.0010.010.030.04CI-0.010.020.030.05灼减，不大于1.01.01.01.05.3检验项目每批产品应进行化学成分和外观的检验。5.4取样与制样化学成分分析的仲裁取样件数按表2规定。用插管在每件（袋）中心及周围等距离处取三点，每件(袋)取样量不少于10g,将试样混匀后，用四分法迅速缩分至试样所需数量，装入清洁的塑料瓶（袋）中并封口。表2件（袋）数1564950-100100取样件（袋）数件（袋）数的100%件（袋）数的10%5件（袋）数的平方根取整数取正整数
