Metal - Discs Iron Base Pure Iron Binary Steel Cast Iron Aluminium Base Alumina Pure Aluminium Aluminium Alloy Cobalt Base Cobalt Alloy Copper Base Pure Copper Copper Alloy Magnesium Base Pure Magnesium Magnesium Alloy Magnesium Nickel Base Pure Nickel Nickel Alloy Lead Base Pure Lead Lead Alloy Tin Base Pure Tin Tin Alloy Titanium Base Pure Titanium Titanium Alloy C, S, N, O, H only Zinc Base Pure Zinc Zinc Alloy Gold Base Gold Alloy Pure Gold Silver Base Pure Silver Silver Alloy Cadmium Base Pure Cadmium Molybdenum Base Pure Molybdenum Zirconium Base Pure Zirconium Zirconium Alloy Metal - Chips Iron Base Binary Pure Iron Cast Iron Steel Aluminium Base Alumina Pure Aluminium Aluminium Alloy Copper Base Pure Copper Copper Alloy Lead Base Lead Alloy Pure Lead Cobalt Base Cobalt Alloy Magnesium Base Pure Magnesium Magnesium Alloy Nickel Base Pure Nickel Nickel Alloy Silver Base Pure Silver Silver Alloy Tin Base Pure Tin Tin Alloy Titanium Base Pure Titanium Titanium Alloy C, S, N, O, H only Zinc Base Pure Zinc Zinc Alloy Chromium Base Pure Chromium Molybdenum Base Pure Molybdenum Zirconium Base Pure Zirconium Zirconium Alloy Ferro-Alloys Hard Metals Carbide Nitride Ferro Alloys Ca RE Mg RE B Mn CaSi Mo Cr MgSi Nb Ti V W Zr P Si Si Ca SiCr SiMn Steel Geological Mineral/Rock/Ore Iron/Steel Rock Industrial Mineral Ore Rock/Siliceous Minerals Steel Soil/Sediment Soil Sediment Si Refractory Refractory/Ceramic Refractory Burnt Refractory Brick Clay Alumina Silica Ceramic Others Glass Industrial By-Products Industrial Process/Byproducts Paint Aluminium Catalyst Cement Copper Flux Iron/Steel Titanium Titanium Dioxide Polymeric Material Various Oil & Coal Coal/Coke/Pitch Other Fuel Carbon Coal Coke Pitch Sediment Mineral Oil Diesel Oil Fuel Oil Gas Oil Gasoline Jet Fuel Kerosene Kerosene/Diesel Kerosine/Diesel Paraffin Oil Reference Fuel Residual Fuel Oil Residual Oil Crude Oil Lube Oil Residual Oil Extreme Pressure Oil Naphtha V.T.B. Food & Agriculture Agriculture/Food Marine Agriculture Food Environment & Health Environment/Health Environment Ash/Dust Atmospheric Particulates Health Paint Water Physical Testing Physical Testing Film Thickness Biological Fluids Biological Fluid Trace Elements Pure Chemicals High Purity Chemicals Elemental Analysis Organic Stochiometry Stochiometry

Solids and Matrix Based Reference Materials Zinc Base Pure Zinc High Purity Disc   Al Cd Cu Fe In Pb Sn Tl Others/Set Only Size Type Alloy  191-321 ppm <0.7 0.25 (0.97) (2.25) (<0.2) 4.8 <0.5 0.78   Ø80x20mm+ CRM Cast  191-322R ppm 18.9 5.13 3.14 8.65 2.8 13.2 3.1 2.9   Ø80x20mm+ CRM Cast  191-324R ppm 2.2 50 17.4 15.6 15.5 51.4 19.4 (16)   Ø80x20mm+ CRM Cast  191-325R ppm 2.8 100.3 49.1 59.4 45.6 162 50 42   Ø80x20mm+ CRM Cast  191-326 ppm (<1) 203 104.8 265   307       Ø80x20mm+ CRM Cast  191-327 ppm (<1) 301 (0.56) 144   408       50g CRM  Zinc Base Pure Zinc Pure Chips   As Cd Cu Fe Pb Sb Sn Others/Set Only Size Type Alloy  202-HC52901 %   0.001 0.0001 0.001 0.003       50g CRM   202-HC52903 % 0.0052 0.0733 0.0021 0.0301 0.309 0.0106 0.0025   100g CRM  Zinc Base Pure Zinc Remelted Chips   Al Cd Cu Fe Pb Sn Others/Set Only Size Type Alloy  221-U1C %   0.49 0.8 1.29 2.54 1.53   100g CRM   221-U2C %   0.21 0.41 0.56 1.07 0.84   100g CRM   221-U3C % 1.03 0.49 0.8 0.0056 2.45 1.56   100g CRM   221-U4C % 0.52 0.21 0.41 0.0016 1.03 0.82   100g CRM   221-U5C % 0.2 0.096 0.198 0.23 0.5 0.4   100g CRM   221-U6C % 0.103 0.058 0.087 0.097 0.27 0.167   100g CRM   221-U7C % 0.6 0.024 0.038 0.065 0.121 0.091   100g CRM   221-U8C % 0.021 0.01 0.02 0.026 0.054 0.043   44x44x19mm CRM Cast Zinc Base Pure Zinc Spelter Block   Ag Al Ca Cd Cr Cu Fe Ga Ge In Mg Mn Ni Pb Si Sn Others/Set Only Size Type Alloy  331-631 % (<0.0005) 0.5 <0.001 0.0002 0.0001 0.0013 0.005 (0.002) (0.0002) 0.0023 (<0.001) 0.00015 (<0.0005) (0.001) (0.002) 0.0001   44x44x19mm CRM Cast