SRM 869b Column Selectivity Test Mixture for Liquid Chromatography 液相色谱柱的选择性试验混合物 5x1.1mL
SRM 870 Column Performance Test Mixture of Liquid Chromatography 液相色谱柱性能试验混合物 5x1.1mL
SRM 871 Bronze, Phosphor (CDA 521) 青铜、磷(CDA 521) 100g
SRM 872 Bronze, Phosphor (CDA 544) 青铜、磷(CDA 521) 100g
SRM 874 Cupro-Nickel, 10% (CDA 706) 铜镍合金, 10% (CDA 706) 100g
SRM 875 Cupro-Nickel, 10% (CDA 706) 铜镍合金, 10% (CDA 706) 100g
SRM 879 Nickel Silver, (CDA 762) 镍黄铜, (CDA 762) 100g
SRM 880 Nickel Silver, (CDA 770) 镍黄铜, (CDA 770) 100g
SRM 882 Alloy Ni-Cu-Al 100g
SRM 885 Refined Copper 精炼铜 200g