NIST标准品 美国国家标准技术研究院标品

1d Limestone, Argillaceous
4l Cast Iron
5m Cast Iron
6g Cast Iron
8k Bessemer Steel (Simulated) 0.1 % Carbon (chip form)
12h Basic Open-Hearth Steel, 0.4% Carbon
13g 0.6% Carbon Steel
14g Carbon Steel (AISI 1078)
16f Basic Open-Hearth Steel, 1% Carbon (chip form)
17f Sucrose Optical Rotation
19h Basic Electric Steel, 0.2% Carbon
20g AISI 1045 Steel
25d Manganese Ore
30f Cr-V Steel (SAE 6150)
32e Carbon Low Alloy Steel (SAE 3140) (chip form)
33e Nickel Steel
39j Benzoic Acid (Calorimetric Standard)
45d Copper Secondary Freezing Point
46h Portland Cement Fineness Standard
49e Lead Secondary Freezing Point Standard
50c Tungsten-Chromium-Vanadium Steel
53e Lead-Base Bearing Metal (84Pb-10Sb-6Sn)
54d Bearing Metal (Tin Base)
57b Silicon Metal
58a Ferrosilicon (73% Si Regular Grade)
59a Ferrosilicon Grade E1 (powder form)
64c Ferrochromium High Carbon (powder form)
68c Standard Ferromanganese (powder form)
69b Bauxite (Arkansas)
70b Potassium Feldspar
72g Low Alloy Steel (AISI 4130)
76a Burnt Refractory (Al203-40%)
77a Burnt Refractory (Al203-60%)
78a Burnt Refractory (Al203-70%)
79a Fluorspar
80a Soda-Lime Glass (Beads)
81a Glass Sand
84l Potassium Hydrogen Phthalate
87a Silicon-Aluminum Alloy
89 Glass, Lead Barium
90 Ferrophosphorus (powder form)
92 Soda-Lime Glass, Low Boron (Powder)
93a Borosilicate Glass
97b Flint Clay
98b Plastic Clay
99b Soda Feldspar
100b Manganese Steel?
101g 18 Cr-10 Ni Steel (AISI 304L) (powder form)
107c Cast Iron (Ni-Cr-Mo)
114q Portland Cement Fineness Standard
115a Copper-Nickel-Chromium Cast Iron?
122i Cast Iron
123c Stainless Steel, Cr-Ni-Nb (AISI 348)
125b LA Steel, High Silicon
126c High-Nickel Steel (Nominal Mass Fraction 36 % Ni) (chip form)
127b Solder (40Sn — 60Pb)
129c LA Steel, High Sulfur (SAE 112)
131h Refined Cast Iron
132b Tool Steel (AISI M2)
133b Chromium-Molybdenum Steel
134a Molybdenum-Tungsten-Chromium-Vanadium Steel
136f Potassium Dichromate (Oxidimetric Standard)
139b Chromium-Nickel-Molybdenum Steel
141e Acetanilide
143d Cystine?
152a Basic Open-Hearth Steel 0.5% Carbon (Tin Bearing)
155 Chromium-Tungsten Steel
158a Silicon Bronze (chip form)
160b Stainless Steel (Cr 18-Ni 12-Mo 2) (AISI 316)
163 Chromium Steel
165a Glass Sand?
166c Low-Carbon Stainless Steel (AISI 316L) (chip form)
173c Titanium Alloy UNS R56400 (chip form)
178 0.4C Basic Oxygen Furnace Steel
179 LA Steel, High Silicon
180 Fluorspar, High Grade
182 Lithium Ore (Petalite)
183 Lithium Ore (Lepidolite)
185i Potassium Hydrogen Phthalate, pH Standard
186g pH Standards
Potassium Dihydrogen Phosphate (186-I-g)
Disodium Hydrogen Phosphate (186-II-g)
187f Sodium Tetraborate Decahydrate (Borax) pH Standard
188 Potassium Hydrogen Tartrate (pH Standard)
189c Potassium Tetroxalate Dihydrate pH Standard
191d pH Standard
Sodium Bicarbonate (191d-I)
Sodium Carbonate (191d-II)
193 Potassium Nitrate
194a Ammonium Dihydrogen Phosphate
195 Ferrosilicon (75% Si-High-Purity Grade)
196 Ferrochromium Low Carbon (powder form)
198 Silica Brick
199 Silica Brick
277 Tungsten Concentrate
278 Obsidian Rock
291 Cr-Mo Steel (ASTM A-213)
293 Cr-Ni-Mo (AISI 8620)
330a Copper Ore Mill Heads
331a Copper Ore Mill Tails
334 Gray Cast Iron?
339 17 Chromium-9 Nickel-0.2 Selenium Steel
341 Ductile Cast Iron
342a Nodular Cast Iron
343a Stainless Steel (AISI 431)
344 15 Chromium-7 Nickel Steel (Mo Precipitation Hardening)
345b Fe-Cr-Ni Alloy UNS J92180 (chip form)
346a Valve Steel
349a Waspaloy
350c Benzoic Acid (Acidimetric Standard)
351a Sodium Carbonate (Acidimetric Standard)
360b Zirconium (Sn-Fe-Cr) Alloy
361 AISI 4340 Steel (chip form)
363 Chromium-Vanadium Steel (Modified)
368 Carbon Steel (AISI 1211) (chip form)
399 Unalloyed Copper - Cu VI?
400 Unalloyed Copper - Cu VII
423 Molybdenum Oxide Concentrate (Powder Form)
454 Unalloyed Copper XI (chips)
457 Unalloyed Copper IV (solid)
458 Beryllium-Copper (17510)
459 Beryllium-Copper (17200)
460 Beryllium-Copper Alloy
480 Tungsten 20 % - Molybdenum Alloy Electron Microprobe Standard
481 Gold-Silver Wires for Microprobe Analysis
482 Gold-Copper Wires for Microprobe Analysis
494 Unalloyed Copper I (solid)
495 Unalloyed Copper II (solid)
498 Unalloyed Copper V (solid)
499 Unalloyed Copper VI (solid)
500 Unalloyed Copper - Cu VII
600 Bauxite, Australian-Darling Range
606 Trace Elements in Basalt Glass
607 Potassium Feldspar
610 Trace Elements in Glass
611 Trace Elements in Glass
612 Trace Elements in Glass
613 Trace Elements in Glass
614 Trace Elements in Glass
616 Trace Elements in Glass
617 Trace Elements in Glass
620 Soda Lime, Flat
622 Soda-Lime-Silica Glass
625 Zinc-Base Die-Casting Alloy A (block form)
626 Zinc-Base Die-Casting Alloy B (block form)
627 Zinc-Base Die-Casting Alloy C (block form)
628 Zinc-Base Die-Casting Alloy D (block form)
629 Zinc-Base Die-Casting Alloy E (block form)
630 Zinc-Base Die-Casting Alloy F (block form)
631 Spectrographic Zinc Spelter (Modified)
633a Portland Cement
634a Portland Cement
635a Portland Cement (Blended with Slag)
640f Line Position Line Shape Standard for Powder Diffraction (Silicon Powder)
641 Spectroscopic Titanium-Base Standards Titanium Alloy, 8 Mn (A)
642 Spectroscopic Titanium-Base Standards Titanium Alloy, 8 Mn (B)
643 Spectroscopic Titanium-Base Standards Titanium Alloy, 8 Mn (C)
647 Titanium Alloy, Al-Mo-Sn-Zr
648 Titanium-Base Alloy 5Al-2Sn-2Zr-4Cr-4Mo
649 Titanium-Base Alloy (15V-3Al-3Cr-3Sn)
654b Titanium Alloy, Al-V
656 Silicon Nitride Powders (Quantitative Analysis Powder Diffraction Standard)
659 Particle Size Distribution Standard for Sedigraph Calibration
660c Line Position Line Shape Standard for Powder Diffraction (Lanthanum Hexaboride Powder)
663 Chromium-Vanadium Steel (Modified)
670 Rutile Ore
675 Line Position, Mica (XRD)
679 Brick Clay
682 High-Purity Zinc
683 Zinc, Metal
688 Basalt Rock
689 Ferrochromium Silicon
690 Iron Ore Canada
691 Iron Oxide, Reduced
692 Iron Ore, Labrador
693 Iron Ore (Nimba)
694 Phosphate Rock, Western
695 Trace Elements in Multi-Nutrient Fertilizer
696 Bauxite, Surinam
697 Bauxite, Dominican
698 Bauxite, Jamaican
705a Polystyrene (Narrow Molecular Weight Distribution)
706a Polystyrene (Broad Molecular Mass Distribution)
717a Hi Boron Glass Viscosity
720 Sapphire Heat Capacity
723e Tris(hydroxymethyl)aminomethane (HOCH2)3CNH2?Acidimetric Standard
728 Intermediate-Purity Zinc
731L1 Borosilicate Glass - Thermal Expansion
731L2 Borosilicate Glass - Thermal Expansion
731L3 Borosilicate Glass - Thermal Expansion
741a Tin Freezing-Point Standard
742 Aluminum Oxide Pyrometric Standard
762 Magnetic Moment Standard - Nickel Disk
764a Magnetic Susceptibility Standard - Platinum Cylinder
772a Magnetic Moment Standard - Nickel Sphere
781D2 Molybdenum - Heat Capacity
853a Aluminum Alloy 3004
854a Aluminum Alloy 5182 (chip form)
855a Aluminum Casting Alloy 356
856a Aluminum Casting Alloy 380
858 Aluminum Alloy 6011
861 Nickel-based Superalloy PWA 1484 (chip form)
862 High-Temperature Alloy L 605
864 Nickel Alloy UNS N06600 (chip form)
865 Inconel 625
866 Incoloy 800
867 Ni-Fe-Cr Alloy UNS N08825 (chip form)
868 High-Temperature Alloy (Fe-Ni-Co)
869b Column Selectivity Test Mixture for Liquid Chromatography (Polycyclic Aromatic Hydrocarbons)
870 Column Performance Test Mixture of Liquid Chromatography
871 Phosphor Bronze (CDA 521)
872 Phosphor Bronze (CDA 544)
874 Cupro-Nickel, 10% (CDA 706) "HIGH-PURITY"
875 Cupro-Nickel, 10% (CDA 706) "DOPED"
880 Nickel Silver (CDA 770)?(granular form)
882 Nickel-Copper Alloy (65Ni-31Cu-3Al)
885 Refined Copper (pin form)
886 Refractory Gold Ore
887 Cemented Carbide (W-83,Co-10)
888 Cemented Carbide (W-64,Co-25,Ta-5)
889 Cemented Carbide (W-75,Co-9,Ta-5,Ti-4)
892 High-Alloy White Cast Iron (Ni-Hard, Type IV)
893 Stainless Steel (SAE 405)
895 Stainless Steel (SAE 201)
897 Tracealloy A
899 Tracealloy C
909c Frozen Human Serum
911c Cholesterol
912b Urea
913b Uric Acid
914b Creatinine
917c D-Glucose (Dextrose)
918c Potassium Chloride General Ion Activity Standard
919b Sodium Chloride?
920 D-Mannitol
921 Cortisol (Hydrocortisone)
924a Lithium Carbonate?
927e Bovine Serum Albumin (7% solution) (Total Protein Standard)
928 Lead Nitrate?
929a Magnesium Gluconate
931h Liquid Absorbance Standard for Ultraviolet Visible Spectrophotometry
937 Iron Metal?
951a Boric Acid Isotopic Standard
953 Neutron Density Monitor Wire
955c Toxic Metals in Caprine Blood
956d Electrolytes in Frozen Human Serum
965b Glucose in Frozen Human Serum
967a Creatinine in Frozen Human Serum
968f Fat-Soluble Vitamins in Frozen Human Serum
971a Hormones in Frozen Human Serum
972a Vitamin D Metabolites in Frozen Human Serum
973 Boric Acid Acidimetric Standard
975a Isotopic Standard for Chlorine
977 Isotopic Standard for Bromine
978a Assay-Isotopic Standard for Silver
979 Chromium Isotopic Standard
980 Isotopic Standard for Magnesium
981 Common Lead Isotopic Standard
983 Radiogenic Lead Isotopic Standard
984 Rubidium Chloride
986 Isotopic Standard for Nickel
987 Strontium Carbonate Isotopic Standard
994 Isotopic Standard for Gallium
998 Angiotensin I (Human)
999c Potassium Chloride Primary Standard (Dried at 500 °C)
1003c Glass Beads - Particle Size Distribution
1004b Glass Beads - Particle Size Distribution
1010a Microcopy Resolution Test Charts
1012 Flooring Radiant Panel
1017b Glass Beads - Particle Size Distribution (100 μm to 400 μm diameter range)
1018b Glass (Particle Size)
1019b Glass (Particle Size)
1021 Glass ( Particle Size)
1034 Unalloyed Copper
1035 Leaded-Tin Bronze Alloy
1082 Cigarette Ignition Strength Standard
1085c Wear Metals in Lubricating Oil
1089 Steels, Set (consists of SRMs 1095, 1096, 1097, 1098 1099)
1090 Oxygen in Ingot Iron
1091a Oxygen in Stainless Steel (AISI 431)
1093 Oxygen in Valve Steel
1094 Oxygen in Maraging Steel
1107 Naval Brass UNS 46400
1110 Red Brass B
1111 Red Brass Standard
1112 Gilding Metal?
1113 Gilding Metal?
1114 Gilding Metal?
1115 Commercial Bronze Standard for Optical Emission X-ray Spectroscopic Analysis
1116 Commercial Bronze Standard for Optical Emission X-ray Spectroscopic Analysis
1117 Commercial Bronze Standard for Optical Emission X-ray Spectroscopic Analysis
1124 Free Cutting Brass (UNS C36000)
1128 Titanium -Base Alloy (15V-3Al-3Cr-3Sn)
1129 Solder (63Sn-37Pb)
1131 Solder (40Sn - 60Pb)
1132 Lead-Base Bearing Metal (84Pb - 10Sb - 6Sn)
1134 Low-Alloy High-Silicon Steel (disk form)
1135 LA Steel, High Silicon
1138a Cast Steel Standard
1139a Cast Steel Standard
1155a Stainless Steel (Cr 18 Ni 12 Mo 2)(AISI 316)
1157 Tool Steel (AISI M2)
1158 High-Nickel Steel (Nominal Mass Fraction 36 % Ni) (disk form)
1159 Electronic Magnetic Alloy Standard
1160 Elec/Mag Ni-Mo-Fe
1171 Stainless Steel Cr 17-Ni 11-Ti 0.3 (AISI 321)
1172 Stainless Steel Cr 17-Ni 11-Nb 0.6 (AISI 348)
1173 Ni-Cr-Mo-V Steel
1218 LA Steel, High Silicon
1219 Stainless Steel Cr16 - Ni2? (AISI 431) (disk form)
1223 Chromium Steel
1224 LA Steel, Carbon (AISI 1078)
1225 LA Steel (AISI 4130)
1226 LA Steel
1227 Basic Open-Hearth Steel, 1% Carbon
1228 LA Steel, 0.1% C
1230 High-Temperature Alloy A286 (disk form)
1240c Aluminum Alloy 3004 (disk form)
1241c Aluminum Alloy 5182 (disk form)
1242 High Temperature Alloy L 605
1243 Ni-Cr-Co Alloy UNS N07001 (disk form)
1244 Nickel Alloy UNS N06600 (disk form)
1246 Incoloy 800
1247 Ni-Fe-Cr Alloy UNS N08825 (disk form)
1249 Ni-Cr-Fe-Nb-Mo Alloy UNS N07718 (disk form)
1250 High-Temperature Alloy (Fe-Ni-Co)
1255b Aluminum Alloy 356 (disk form)
1256b Aluminum Alloy 380
1258-I Aluminum Alloy 6011 (Modified) (disk form)
1259 Aluminum Alloy 7075
1264a High-Carbon Steel (Modified) (disk form)
1265a Electrolytic Iron (disk form)
1269 Line Pipe (AISI 1526 mod.)
1270 LA Steel, Cr-Mo (A336) (F-22)
1271 LA Steel (HSLA-100)
1276a Cupro-Nickel (CDA 715)
1286 Low Alloy Steel (HY 80)
1295 Stainless Steel (SAE 405)
1297 Stainless Steel (SAE 201)
1358b Coating Thickness Standard, (Nonmagnetic Coating on Steel)
1359b Coating Thickness Standard (Nonmagnetic Coating on Steel)
1361b Coating Thickness Standard (Nonmagnetic Coating on Steel)
1362b Coating Thickness Standard (Nonmagnetic Coating on Steel)
1363b Coating Thickness Standard (Nonmagnetic Coating on Steel)
1364b Coating Thickness Standard (Nonmagnetic Coating on Steel)
1400 Bone Ash
1401 Trace Metals in Frozen Human Blood
1411 Soft Borosilicate Glass
1412a Multicomponent Glass (disk form)
1413 High Alumina Sand
1416 Aluminosilicate Glass for Liquidus Temperature
1452 Thermal Resistance - Fibrous Glass Blanket for High Precision Measurements
1453 Thermal Conductivity -?Expanded Polystyrene Board
1457 Superconducting Critical Current - Nb Ti Wire
1459 Thermal Resistance - Fumed Silica Board
1473c Low Density Polyethylene Resin
1474b Polyethylene Resin
1478 Polystyrene (Narrow Molecular Weight Distribution)
1479 Polystyrene (Narrow Molecular Weight Distribution)
1482a Linear Polyethylene Narrow Molecular Mass Distribution (Nominal Mass-Average Molar Mass of 13 600 g/mol)
1483a Linear Polyethylene Narrow Molecular Mass Distribution (Nominal Mass-Average Molar Mass of 32 100 g/mol)
1484a Linear Polyethylene
1486 Bone Meal
1487 Poly(Methyl Methacrylate) (6 K Narrow Molecular Weight Distribution)
1488 Poly (Methyl Methacrylate) 29 K Narrow Molecular Weight Distribution
1491a Methyl-Substituted Polycyclic Aromatic Hydrocarbons in Toluene
1493 Polychlorinated Biphenyl Congeners in 2,2,4-Trimethylpentane
1494 Aliphatic Hydrocarbons in 2,2,4-Trimethylpentane
1496 Unpigmented Polyethylene Gas Pipe Resin
1507b 11-Nor-Delta-9-Tetrahydrocannabinol-9-Carboxylic Acid in Freeze-Dried Urine
1514 Thermal Analysis Purity Set?
1515 Apple Leaves
1543 GC/MS System Performance Standard
1546a Meat Homogenate
1547 Peach Leaves
1548a Typical Diet
1549a Whole Milk Powder
1565 Mycotoxins in Corn
1566b Oyster Tissue
1567b Wheat Flour
1568b Rice Flour
1570a Trace Elements in Spinach Leaves
1573a Tomato Leaves
1575a Trace Elements in Pine Needles (Pinus taeda)
1577c Bovine Liver
1597a Complex Mixture of Polycyclic Aromatic Hydrocarbons Coal Tar
1598a Inorganic Constituents in Animal Serum
1616b Sulfur in Kerosene (Low Level)
1617b Sulfur in Kerosine (High Level)
1619b Sulfur in Residual Fuel Oil (0.7%)
1622e Sulfur in Residual Fuel Oil (Nominal Mass Fraction 2 %)
1623d Sulfur in Residual Fuel Oil (Nominal Mass Fraction 0.2 %)
1624d Sulfur in Diesel Fuel Oil (Nominal Mass Fraction 0.4 %)
1632e Trace Elements in Coal (Bituminous)
1633c Trace Elements in Coal Fly Ash
1634c Trace Elements in Fuel Oil
1635a Trace Elements in Coal (Subbitumimous)
1640a Trace Elements in Natural Water
1641e Mercury in Water
1643f Trace Elements in Water
1646a Estuarine Sediment
1647f Priority Pollutant Polycyclic Aromatic Hydrocarbons in Acetonitrile
1648a Urban Particulate Matter
1649b Urban Dust
1650b Diesel Particulate Matter
1656 Thianthrene Combustion Calorimetric Standard
1657 Synthetic Refuse-Derived Fuel Combustion Calorimetric Standard
1658a Methane in Air (Nominal Amount-of-Substance Fraction 1 μmol/mol)
1662a Sulfur Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction?1000 μmol/mol)
1663a Sulfur Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction?1500 μmol/mol)?
1667b Propane in Air (Nominal Amount-of-Substance Fraction 50 μmol/mol)
1668b Propane in Air (Nominal Amount-of-Substance Fraction?100 μmol/mol)
1669b Propane in Air (Nominal Amount-of-Substance Fraction 500 μmol/mol)
1674b Carbon Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction 7 % mol/mol)
1677c Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 10 μmol/mol)
1678c Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 50 μmol/mol)
1679c Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 100 μmol/mol)
1680b Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 500 μmol/mol)
1684b Nitric Oxide in Nitrogen (Nominal Amount-of-Substance Fraction 100 μmol/mol)
1685b Nitric Oxide in Nitrogen (Nominal Amount-of-Substance?Fraction?250 μmol/mol)
1686b Nitric Oxide in Nitrogen (Nominal Amount-of-Substance Fraction 500 μmol/mol)
1687b Nitric Oxide in Nitrogen (Nominal Amount-of-Substance Fraction?1000 μmol/mol)
1690 Polystyrene Spheres (Nominal Diameter 1 μm)
1691 Polystyrene Spheres (Nominal Diameter 0.3 μm)
1693a Sulfur Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction 50 μmol/mol)
1696a Sulfur Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction 3500 μmol/mol)
1711 Aluminum Alloy 3004
1713 Aluminum Alloy 5182
1718 Nitrous Oxide in Air (Nominal Amount-of-Substance Fraction 1 μmol/mol)
1722 Halocarbons in Continental Air (Nominal Amount-of-Substance Fraction - Ambient)
1727 Anode Tin
1728 Tin Alloy (Sn-3Cu-0.5Ag)
1729 Tin Alloy (97 Sn - 3 Pb)
1738 Zinc-Aluminum Alloy
1740 Zinc-Aluminum Alloy
1741 Zinc-Aluminum Alloy
1742 Zinc-Aluminum Alloy
1746 Silver Freezing-Point Standard
1749 Gold versus Platinum Thermocouple Certified Thermometer?
1754 Low-Alloy Steel, AISI 4320
1755 Nitrogen in Low Alloy Steel
1761a Low Alloy Steel
1762a Low Alloy Steel
1763b Low Alloy Steel (disk form)
1764a Low Alloy Steel
1765 Low Alloy Steel
1766 Low Alloy Steel
1767 Low Alloy Steel
1768 High-Purity Iron (disk form)
1772 Tool Steel (S-7)
1775 Refractory Alloy MP-35-N?
1810a Linerboard
1818a Chlorine in Lubricating Base Oils
1819a Sulfur in Lubricating Base Oil
1828c Ethanol-Water Solutions (Six Levels)
1830 Soda-Lime Float Glass (Nominal Mass Fraction 0.1 % Al2O3)
1831 Soda-Lime Sheet Glass (Nominal Mass Fraction 1.2 % Al2O3)
1835 Borate Ore
1848 Lubricating Oil Additive Package
1849a Infant/Adult Nutritional Formula I (milk-based)
1857 Tool Steel for Abrasive Wear Standard
1869 Infant/Adult Nutritional Formula II (milk/whey/soy-based)
1877 Beryllium Oxide Powder
1878b Respirable Alpha Quartz (Quantitative X-Ray Powder Diffraction Standard)
1879b Respirable Cristobalite (Quantitative X-Ray Powder Diffraction Standard)
1880b Portland Cement
1881b Portland Cement (Blended with Fly Ash)
1882a Calcium Aluminate Cement
1883a Calcium Aluminate Cement
1884b Portland Cement
1885b Portland Cement
1886b White Portland Cement
1886a Portland Cement (White Portland Cement with Low Iron)
1887b Portland Cement
1888b Portland Cement
1889b Portland Cement (Blended with Limestone)
1893 Copper Microhardness Test Block (Knoop)
1894a Vickers Microhardness of Copper
1895 Nickel Microhardness Test Block (Knoop)
1896b Vickers Microhardness of Nickel
1898 Titanium Dioxide Nanomaterial
1900 Specific Surface Area Standard
1905 Nickel?Microhardness Test Block (Knoop)?
1906 Nickel?Microhardness Test Block (Knoop)
1907 Nickel Microhardness Test Block (Knoop)
1908 Vickers Microhardness of Nickel
1909 Vickers Microhardness of Nickel
1917 Mercury Porosimetry Standard
1921b Infrared Transmission Wavelength/Wavenumber Standard
1928 Infrared Specular High Reflectance Standard (Nominal Diameter 51 mm)
1929 Infrared Specular High Reflectance?Standard (Nominal Diameter 25 mm)
1932 Fluorescein Solution
1934 Fluorescent Dyes for Quantitative Flow Cytometry (Visible Spectral Range)
1941b Organics in Marine Sediment
1944 New York/New Jersey Waterway Sediment
1945 Organics in Whale Blubber
1946 Lake Superior Fish Tissue
1947 Lake Michigan Fish Tissue
1949 Frozen Human Prenatal Serum
1950 Metabolites in Frozen Human Plasma
1951c Lipids in Frozen Human Serum
1953 Organic Contaminants in Non-Fortified Human Milk
1954 Organic Contaminants in Fortified Human Milk
1957 Organic Contaminants in Non-Fortified Human Serum (Freeze-Dried)
1958 Organic Contaminants in Fortified Human Serum (Freeze-Dried)
1961 Polystyrene Spheres 30 μm Diameter Polystyrene Spheres
1963a Polystyrene Spheres (Nominal?Diameter 100 nm)?
1964 Polystyrene Spheres (Nominal Diameter 60 nm)
1965 Microsphere Slide (10-μm Polystyrene Spheres)
1967a High-Purity Platinum Thermoelement
1968 Gallium Melting-Point Standard
1972 1,3-Dioxolan-2-one Triple Point
1974c Organics in Mussel Tissue (Mytilus edulis)
1976c Instrument Response Standard for X-Ray Powder Diffraction
1978 Particles Size Distribution Standard for Gravity Sedimentation
1979 Powder Diffraction Line Profile Standard for Crystallite Size Analysis(Nano-Crystalline ZnO Powder)
1980 Positive Electrophoretic Mobility (+μE) Standard
1982 Thermal Spray Powder – Particle Size Distribution Yttria-Stabilized Zirconia (Spheroidal)
1984 Thermal Spray Powder - Particle Size Distribution Tungsten Carbide/Cobalt (Acicular)
1985 Thermal Spray Powder - Particle Size Distribution Tungsten Carbide/Cobalt (Spheroidal)
1990 Single Crystal Diffractometer Alignment Standard - Ruby Sphere
1991 Mix Coal Tar/Petroleum Extract in Methylene Chloride
1994 Standard Silicon Single Crystal Wafer for Crystalline Orientation
2000 Calibration Standard for High-Resolution X-Ray Diffraction
2012 Calibration Standard for High-Resolution X-Ray Diffraction (200 mm Wafer)
2034 Holmium Oxide Solution Wavelength Standard (240 nm to 650 nm)
2035b Ultraviolet-Visible-Near-Infrared Wavelength/Wavenumber Transmission Standard
2036 Near Infrared Wavelength/Wavenumber Reflection Standard
2061 TiAl(NbW) Alloy for Microanalysis
2066 K-411 Glass Microspheres
2074 Sinusoidal Roughness Specimen
2075 Sinusoidal Roughness Specimen
2082 Pathlength Absorbance Standards for Microliter Volume Spectrophotometers
2092 Low-Energy Charpy V-Notch Specimens (NIST-Verification, 8-mm Striker)
2093 Low-Energy Charpy V-Notch Specimens (Self-Verification,? 8-mm Striker)
2096 High-Energy Charpy V-Notch Specimens (NIST-Verification, 8 mm-Striker)
2097 High-Energy Charpy V-Notch Specimens (Self-Verification,? 8-mm Striker)
2098 Super-High-Energy Charpy V-Notch?Specimens (NIST-Verification, 8-mm Striker)
2100a Fracture Toughness of Ceramic
2100b Fracture Toughness of Ceramic
2112 Dynamic Impact Force Verification Specimens (Self-Verification, 8-mm Striker, nominal 24 kN)
2113 Dynamic Impact Force Verification Specimens (Self-Verification, 8-mm Striker; 33 kN nominal)
2133 Phosphorus Implant in Si Depth Profile
2135c Ni/Cr Thin Film Depth Profile
2139 Zinc-Aluminum Alloy
2141 Urea
2143 p-Fluorobenzoic Acid
2144 m-Chlorobenzoic Acid
2152 Urea Combustion Calorimetric Standard
2160 Low-Alloy Steel (pin form)
2161 Low Alloy Steel (chip form)
2162 Low Alloy Steel (chip form)
2163 Low Alloy Steel (chip form)
2164 Low Alloy Steel (chip form)
2165 Low Alloy Steel (chip form)
2166 Low Alloy Steel (chip form)
2167 Low Alloy Steel (chip form)
2168 High-Purity Iron (chip form)
2171 LA Steel, (HSLA 100)
2175 Refractory Alloy MP-35-N
2181 HEPES?
2182 HEPES Sodium Salt
2185 Potassium Hydrogen Phthalate pD Standard
2186I Potassium Dihydrogen Phosphate
2186II Disodium Hydrogen Phosphate
2191a Sodium Bicarbonate
2192a Sodium Carbonate
2197 Low-Energy Charpy V-Notch Specimens (Self-Verification, 2-mm Striker)
2198 High-Energy Charpy V-Notch Specimens (Self-Verification, 2-mm Striker)
2203 Potassium Fluoride (Standard for Ion-Selective Electrodes)
2206 Controlled Pore Glass - BET Specific Surface Area (300 nm)
2207 Controlled Pore Glass - BET Specific Surface Area (Nominal Pore Diameter 18 nm)
2214 Isooctane Liquid Density
2216 Miniaturized Low-Energy Charpy V-Notch KLST Specimens (Self-Verification)
2218 Miniaturized High-Energy Charpy V-Notch KLST Specimens (Self-Verification)
2219 Miniaturized Super-High Energy Charpy V-Notch KLST Specimens (Self-Verification)
2235 Bismuth for Thermal Analysis
2244 Relative Intensity Correction Standard for Raman Spectroscopy: 1064 nm Excitation
2245 Relative Intensity Correction Standard for Raman Spectroscopy: 633 nm Excitation
2246 Relative Intensity Correction?Standard for Raman Spectroscopy: 830 nm Excitation
2257 PBDE Congeners in 2,2,4-Trimethylpentane
2258 BDE 209 in 2,2,4-Trimethylpentane
2259 Polychlorinated Biphenyl Congeners in 2,2,4-Trimethylpentane
2260a Aromatic Hydrocarbons in Toluene
2261 Chlorinated Pesticides in Hexane?(Nominal Mass Concentration 2 μg/mL)
2262 Chlorinated Biphenyl Congeners in 2,2,4-Trimethylpentane (Nominal Mass Concentration 2 μg/mL)
2266 Hopanes Steranes in 2,2,4 Trimethylpentane
2269 Perdeuterated PAH-I Solution in Hexane/Toluene
2270 Perdeuterated PAH-II Solution in Hexane/Toluene
2273 Chlorinated Pesticides (DDTs) Metabolites in Isooctane
2274 Polychlorinated Biphenyl Congeners in 2,2,4-Trimethylpentane
2275 Chlorinated Pesticide Solution-II in Isooctane
2285 Ignitable Liquids Test Mixture
2294 Reformulated Gasoline (Nominal Mass Fraction 11% MTBE)
2295 Reformulated Gasoline (nominal 15% MTBE)
2296 Reformulated Gasoline (Nominal Mass Fraction 13 % ETBE)
2297 Reformulated Gasoline (Nominal Mass Fraction 10% Ethanol)
2298 Sulfur in Gasoline (High-Octane)
2299 Sulfur in Gasoline (Reformulated)
2365 BK Virus DNA Quantitative Standard
2366a Cytomegalovirus DNA (TowneΔ147?BAC) for DNA Measurements
2372a Human DNA Quantitation Standard
2373 Genomic DNA Standards for?HER2?Measurements
2374 DNA Sequence Library for External RNA Controls
2377 Fatty Acid Methyl Esters in 2,2,4-Trimethylpentane
2378 Fatty Acids in Frozen Human Serum
2383a Baby Food Composite
2385 Slurried Spinach
2389a Amino Acids in 0.1 mol/L Hydrochloric Acid
2391d PCR-Based DNA Profiling Standard
2392-I Mitochondrial DNA Sequencing (Human HL-60 DNA)
2392 Mitochondrial DNA Sequencing (Human)
2393 CAG Repeat Length Mutation in Huntington's Disease
2396 Oxidative DNA Damage Mass Spectrometry Standards
2426 55 % Aluminum-Zinc Alloy
2429 Flue Gas Desulfurization Gypsum
2430 Scheelite Ore
2431 Titanium Base Alloy
2432 Titanium-Base Alloy 10V - 2Fe - 3Al
2433 Titanium-Base Alloy 8Al-1Mo-1V
2445 Mercury in Iodized Activated Carbon
2448 Mercury in Brominated Activated Carbon
2451 Fine Carbon (Activated) - From Cyanide Ore Leaching
2452 Hydrogen In Titanium Alloy?(Nominal Mass Fraction 60 mg/kg H) (chip form)
2453a Hydrogen In Titanium Alloy (Nominal Mass Fraction 125 mg/kg H)
2454 Hydrogen In Titanium Alloy
2460a Standard Bullet Replica
2461 Standard Cartridge Case
2483 Single-Wall Carbon Nanotubes (Raw Soot)
2484 Multiwall Carbon Nanotubes (Raw Soot)
2492 Bingham Paste Mixture for Rheological Measurements
2493 Bingham Mortar Mixture for Rheological Measurements
2497 Bingham Concrete Mixture for Rheological Measurements
2541 Silicon Resistivity Standard - 0.01 ohm?cm Level
2543 Silicon Resistivity Standard - 1 ohm?cm Level
2556 Used Auto Catalyst (Pellets)
2557 Used Auto Catalyst (Monolith)
2569 Lead Paint Films for Children's Products
2570 Lead Paint Film for Building Surfaces (Blank) (Color:? White)
2571 Lead Paint Film for Building Surfaces (Nominal PB 3.5 mg/cm2?(Color:? Yellow)?
2572 Lead Paint Film for Building Surfaces (Nominal Pb 1.6 mg/cm2) (Color:? Orange)
2573 Lead Paint Film for Building Surfaces (Nominal Pb 1.0 mg/cm2) (Color:? Red)
2574 Lead Paint Film for Building Surfaces (Nominal Pb 0.7 mg/cm2) (Color:? Gold)?
2575 Lead Paint Film for Building Surfaces (Nominal Pb 0.3 mg/cm2) (Color:? Green)
2576 Lead Paint Film for Building Surfaces (Nominal Pb 5.6 mg/cm2) (Color:? Blue)
2579a Lead Paint Films For Building Surfaces (SRM 2570 through SRM 2575)
2580 Powdered Paint (Nominal Mass Fraction of 4 % Lead)
2581 Powdered Paint (Nominal Mass Fraction of 0.5 % Lead)
2582 Powdered Paint (Nominal 200 mg/kg Lead)
2583 Trace Elements in Indoor Dust (Nominal Mass Fraction of 90 mg/kg Lead)
2584 Trace Elements in Indoor Dust (Nominal Mass Fraction of 1 % Lead)
2585 Organic Contaminants in House Dust
2586 Trace Elements in Soil Containing Lead From Paint (Nominal Mass Fraction of 500 mg/kg Lead)
2587 Trace Elements in Soil Containing Lead from Paint (Nominal Mass Fraction of 3000 mg/kg Lead)
2589 Powdered Paint (Nominal Mass Fraction of 10 % Lead)
2613a Carbon Monoxide in Air (Nominal Amount-of-Substance Fraction 20 μmol/mol)
2614a Carbon Monoxide in Air (Nominal Amount-of-Substance Fraction 45 μmol/mol)
2617 Carbon Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction 500 μmol/mol)
2619a Carbon Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction 0.5 % mol/mol)
2620a Carbon Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction 1?% mol/mol)
2621a Carbon Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction 1.5 % mol/mol)
2622a Carbon Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction?2?% mol/mol)
2627a Nitric Oxide in Nitrogen (Nominal Amount-of-Substance Fraction 5 μmol/mol)
2630 Nitric Oxide in Nitrogen (Nominal Amount-of-Substance Fraction 1500 μmol/mol)
2635a Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 25 μmol/mol)
2636a Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction?250 μmol/mol)
2639a Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 1 % mol/mol)
2641a Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 4 % mol/mol)
2659a Oxygen in Nitrogen (Nominal Amount-of-Substance Fraction 21 % mol/mol)
2668 Toxic Elements in Frozen Human Urine
2669 Arsenic Species in Frozen Human Urine
2681 Trace Constituent Elements in Blank Filters
2682c Subbituminous Coal (Nominal Mass Fraction 0.5 % Sulfur)
2683c Bituminous Coal (Nominal Mass Fraction 2 % Sulfur)
2684c Bituminous Coal (Nominal Mass Fraction 3 % Sulfur)
2685c Bituminous Coal (Nominal Mass Fraction 5 %Sulfur)
2688 Portland Cement Clinker
2689 Coal Fly Ash
2690 Coal Fly Ash
2691 Coal Fly Ash
2692c Bituminous Coal (Nominal Mass Fraction 1 % Sulfur)
2693 Bituminous Coal (Nominal Mass Fraction 0.5 % Sulfur)?
2696 Silica Fume (powder form)
2700 Hexavalent Chromium in Contaminated Soil (Low Level)
2701 Hexavalent Chromium in Contaminated Soil (High Level)
2702 Inorganics in Marine Sediment
2703 Sediment for Solid Sampling (Small Sample) Analytical Techniques
2706 New Jersey Soil, Organics Trace Elements
2709a San Joaquin Soil Baseline Trace Element Concentrations
2710a Montana I Soil Highly Elevated Trace Element Concentrations
2711a Montana II Soil Moderately Elevated Trace Element Concentrations
2717a Sulfur in Residual Fuel Oil (Nominal Mass Fraction 3%)
2718a Green Petroleum Coke
2719 Calcined Petroleum Coke
2720 Sulfur in Di-n-Butyl Sulfide
2723b Sulfur in Diesel Fuel Oil (Nominal Mass Fraction 10 mg/kg)
2730 Hydrogen Sulfide in Nitrogen (Nominal Amount-of-Substance Fraction 5 μmol/mol)
2731 Hydrogen Sulfide in Nitrogen (Nominal Amount-of-Substance Fraction 20 μmol/mol)
2740a Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 10 % mol/mol)
2741a Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction?13 % mol/mol)
2750 Methane in Air (Nominal Amount-of-Substance Fraction 50 μmol/mol)
2765 Propane in Air (Nominal Amount-of-Substance Fraction 100 nmol/mol)
2770 Sulfur in Diesel Fuel Oil (Nominal Mass Fraction 40 mg/kg)
2775 Foundry Coke
2776 Furnace Coke
2777 Weathered Gulf of Mexico Crude Oil in Toluene
2779 Gulf of Mexico Crude Oil
2780a Hard Rock Mine Waste
2781 Domestic Sludge
2782 Industrial Sludge
2786 Fine Atmospheric Particulate Matter (Mean Particle Diameter < 4 μm)
2787 Fine Atmospheric Particulate Matter (Mean Particle Diameter < 10 μm)
2790 Inorganic Constituents in Hardwood Biomass Material
2791 Inorganic Constituents in Softwood Biomass Material
2798a Vickers Microhardness of Nickel
2812 Rockwell C Scale Hardness - High Range
2816 Rockwell Hardness 15N Scale -? Low Range (Nominal 72 HR15N)
2817 Rockwell Hardness 15N Scale - Mid Range (Nominal 83 HR15N)
2818 Rockwell Hardness 15N Scale - High Range (Nominal 91 HR15N)
2819 Rockwell Hardness 30N Scale - Low Range (Nominal 45 HR30N)
2820 Rockwell Hardness 30N Scale - Mid Range (Nominal 64 HR30N)
2821 Rockwell Hardness 30N Scale - High Range (Nominal 79 HR30N)
2828 Knoop Microhardness of Steel
2830 Knoop Hardness of Ceramics
2831 Vickers Hardness of Ceramics Hardmetals
2841 Semiconductor Thin Film: AlxGa1-xAs Epitaxial Layers (Al mole fraction?x?near 0.20)
2842 Semiconductor Thin Film: AlxGa1-xAs Epitaxial Layers (Al mole fraction x near 0.30)
2855 Additive Elements in Polyethylene
2859 Restricted Elements in Polyvinyl Chloride
2860 Phthalates in Polyvinyl Chloride
2861 Restricted Elements in Polyvinyl Chloride
2885 Polyethylene (Mass-Average Molar Mass [Mw]?6 280 g/mol)
2886 Polyethylene (Mass-Average Molar Mass [MW] 87 000 g/mol)?
2887 Polyethylene (Mass-Average Molar Mass [Mw] 196 400 g/mol)
2890 Water Saturated 1-Octanol
2891 Ethanol-Water Solution (Nominal Mass Fraction 0.02 %)
2892 Ethanol-Water Solution (Nominal Mass Fraction 0.04 %)
2893a Ethanol-Water Solution (Nominal Mass Fraction 0.08 %)
2894 Ethanol-Water Solution (Nominal Mass Fraction 0.1 %)
2895 Ethanol-Water Solution (Nominal Mass Fraction 0.2 %)
2896 Ethanol-Water Solution (Nominal Mass Fraction 0.3 %)
2897a Ethanol Water Solution (Nominal Mass Fraction 2 %)
2898a Ethanol Water Solution, (Nominal Mass Fraction 6 %)
2899a Ethanol-Water Solution (Nominal Mass Fraction 25 %)
2900 Ethanol-Water Solution (Nominal Mass Fraction 95.6%)
2905 Trace Terrorist Explosives Simulants
2910b Hydroxyapatite
2924 C-Reactive Protein Solution
2940a Relative Intensity Correction Standard for Fluorescence Spectroscopy: Orange Emission
2941a Relative Intensity Correction Standard for Fluorescence Spectroscopy: Green Emission
2943 Relative Intensity Correction Standard for Fluorescence Spectroscopy: Blue Emission
2944 Relative Intensity Correction Standard for Fluorescence Spectroscopy: Red Emission
2971 24R,25-Dihydroxyvitamin D3?Calibration Solution
2972a 25-Hydroxyvitamin D Calibration Solutions
2973 Vitamin D Metabolites in Frozen Human Serum (High Level)
2974a Organics in Freeze-Dried Mussel Tissue (Mytilus edulis)
2975 Diesel Particulate Matter
2976 Trace Elements Methylmercury in Mussel Tissue (Freeze-Dried)
3030 Monomethylarsonic Acid Standard Solution
3031 Dimethylarsinic Acid Standard Solution
3033 Arsenobetaine Standard Solution
3034 Arsenocholine Standard Solution
3035 Arsenic Species in Apple Juice
3036 Arsenic Acid (AsV) Standard Solution
3037 Arsenous Acid (AsIII) Standard Solution
3060 Monoester Phthalates in Acetonitrile
3074 Phthalates in Methanol
3077 Aroclor 1242 in Transformer Oil
3079 Aroclor 1254 in Transformer Oil
3080 Aroclor 1260 in Transformer Oil
3101a Aluminum (Al) Standard Solution
3102a Antimony (Sb) Standard Solution
3103a Arsenic (As) Standard Solution
3104a Barium (Ba) Standard Solution
3105a Beryllium (Be) Standard Solution
3106 Bismuth (Bi) Standard Solution
3107 Boron (B) Standard Solution?
3108 Cadmium (Cd) Standard Solution
3109a Calcium (Ca) Standard Solution
3110 Cerium (Ce) Standard Solution
3112a Chromium (Cr) Standard Solution
3114 Copper (Cu) Standard Solution
3115a Dysprosium (Dy) Standard Solution
3116a Erbium (Er) Standard Solution
3117a Europium (Eu) Standard Solution
3118a Gadolinium (Gd) Standard Solution
3119a Gallium (Ga) Standard Solution
3120a Germanium (Ge) Standard Solution
3121 Gold (Au) Standard Solution
3122 Hafnium (Hf) Standard Solution
3123a Holmium (Ho) Standard Solution
3124a Indium (In) Standard Solution
3126a Iron (Fe) Standard Solution
3127a Lanthanum (La) Standard Solution
3128 Lead (Pb) Standard Solution
3129a Lithium (Li) Standard Solution
3130a Lutetium (Lu) Standard Solution
3131a Magnesium (Mg) Standard Solution
3132 Manganese (Mn) Standard Solution
3133 Mercury (Hg) Standard Solution
3134 Molybdenum (Mo) Standard Solution
3135a Neodymium (Nd) Standard Solution
3136 Nickel (Ni) Standard Solution
3137 Niobium (Nb) Standard Solution
3138 Palladium (Pd) Standard Solution
3139a Phosphorus (P) Standard Solution
3140 Platinum (Pt) Standard Solution
3141a Potassium (K) Standard Solution
3143 Rhenium (Re) Standard Solution
3145a Rubidium (Rb) Standard Solution
3147a Samarium (Sm) Standard Solution
3148a Scandium (Sc) Standard Solution
3149 Selenium (Se) Standard Solution
3150 Silicon (Si) Standard Solution
3151 Silver (Ag) Standard Solution
3152a Sodium (Na) Standard Solution
3155 Tantalum (Ta) Standard Solution
3156 Tellurium (Te) Standard Solution
3157a Terbium (Tb) Standard Solution
3158 Thallium (Tl) Standard Solution
3160a Thulium (Tm) Standard Solution
3161a Tin (Sn) Standard Solution
3162a Titanium (Ti) Standard Solution
3163 Tungsten (W) Standard Solution
3164 Uranium (U) Standard Solution (Radioactive)
3165 Vanadium (V) Standard Solution?
3166a Ytterbium (Yb) Standard Solution
3167a Yttrium (Y) Standard Solution
3168a Zinc (Zn) Standard Solution
3169 Zirconium (Zr) Standard Solution
3177 Mercuric Chloride?(HgCl2)?Standard Solution
3180 Iodide Anion (I-) Standard Solution
3181 Sulfate Anion (SO42–) Standard Solution
3182 Chloride Anion (Cl–) Standard Solution
3183 Fluoride Anion (F-) Standard Solution
3184 Bromide Anion (Br-) Standard Solution
3185 Nitrate Anion (NO3–) Standard Solution
3186 Phosphate Anion (PO43-) Standard Solution
3222 Cigarette Tobacco Filler
3232 Kelp Powder (Thallus laminariae)
3233 Fortified Breakfast Cereal
3234 Soy Flour
3235 Soy Milk
3238 Soy-Containing Solid Oral Dosage Form
3246 Ginkgo biloba?(Leaves)
3247 Ginkgo biloba?(Extract)
3248 Ginkgo-Containing Tablets
3252 Protein Drink Mix
3253 Yerba Mate Leaves
3254 Green Tea?(Camellia sinensis)?Leaves
3255 Green Tea (Camellia sinensis) Extract
3256 Green Tea-Containing Solid Oral Dosage Form
3262 St. John's Wort?(Hypericum perforatum L.) Aerial Parts
3274 Botanical Oils Containing Omega-3 Omega-6 FattyAcids
3275 Omega-3 Omega-6 Fatty Acids in Fish Oil
3278 Tocopherols in Edible Oils
3280 Multivitamin/Multielement Tablets
3281 Cranberry (Fruit)
3282 Low-Calorie Cranberry Juice Cocktail
3287 Blueberry (Fruit)
3290 Dry Cat Food
3299 Ground Turmeric (Curcuma longa?L.) Rhizome
3451 Low Temperature Seebeck Coefficient Standard
3530 Iodized Table Salt (Iodide)
3532 Calcium-Containing Solid Oral Dosage Form
3600 Absolute Intensity Calibration Standard for Small-Angle X-ray Scattering
3667 Creatinine in Frozen Human Urine
3668 Mercury, Perchlorate, Iodide in Frozen Human Urine
3669 Arsenic Species in Frozen Human Urine (Elevated Levels)
3672 Organic Contaminants in Smokers' Urine (Frozen)
3673 Organic Contaminants in Non-Smokers' Urine (Frozen)
3949 Folate Vitamers in Frozen Human Serum
3950 Vitamin B6?in Frozen Human Serum
4222d Carbon-14-n-hexadecane Radioactivity Standard
4226D Nickel-63 Radioactivity Standard?
4274 Holmium-166m Gamma-ray Emission Rate Standard?
4288B Technetium-99 Radioactivity Standard?
4320b Curium-244 Radioactivity?Standard
4321d Natural Uranium Radioactivity Standard
4323c Plutonium-238 Radioactivity Standard
4326a Polonium-209 Radioactivity Standard
4328C Thorium-229 Radioactivity Standard
4330C Plutonium-239 Radioactivity Standard?
4332E Americium-243 Radioactivity Standard?
4334j Plutonium-242 Radioactivity Standard
4337 Lead-210 Radioactivity Standard?
4339b Radium-228 Radioactivity Solution
4340B Plutonium-241 Radioactivity Standard?
4341a Neptunium-237 Radioactivity Standard
4342A Thorium-230 Radioactivity Standard?
4350B River Sediment Environmental Radioactivity Standard
4351 Human Lung Environmental Radioactivity Standard
4352 Human Liver Environmental Radioactivity Standard
4353A Rocky Flats Soil Number 2