SRM 2828  Knoop Microhardness of Steel鋼的努氏硬度 each
美國NIST標(biāo)準(zhǔn)品 SRM 2829  Vickers Microhardness of Steel鋼的維氏顯微硬度  each
SRM 2830  Microhardness, Ceramic-Knoop陶瓷努氏顯微硬度 each 
SRM 2831  Vickers Hardness of Ceramics and Hardmetals陶瓷和硬質(zhì)合金的維氏硬度  each
SRM 2841  Semiconductor Thin Film: AlxGa1-xAs Epitaxial Layers半導(dǎo)體薄膜：AlxGa1-xAs外延層  disk
SRM 2842  Semiconductor Thin Film: AlxGa1-xAs Epitaxial Layers半導(dǎo)體薄膜：AlxGa1-xAs外延層  disk
SRM 2855  Additive Elements in Polyethylene聚乙烯中的添加劑  3 bottles
SRM 2870  Relative Permittivity and Loss Tangent, 1422 Cross-Linked Polystyrene  circular-cylindrical puck
SRM 2881  Polystyrene Absolute Molecular Mass Distribution Standard聚苯乙烯分子質(zhì)量分布標(biāo)準(zhǔn)  0.3g
SRM 2885  Polyethylene (Mw, 6 280 g/mol) 聚乙烯(MW，6280克/摩爾)  0.3 g
SRM 2886  Polyethylene (Mw, 87 000 g/mol) 聚乙烯(MW，87000克/摩爾)  0.3 g 
SRM 2887  Polyethylene (Mw, 196 400 g/mol) 聚乙烯(MW，196400克/摩爾)  0.3 g
SRM 2890  Water Saturated 1-Octanol水飽和的1 -辛醇  5 x 2 mL