NIST标准品 美国国家标准技术研究院

NIST标准品 美国国家标准技术研究院

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 and 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 l-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 and 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 and 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 and 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 and 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 and X-ray Spectroscopic Analysis

1116 Commercial Bronze Standard for Optical Emission and X-ray Spectroscopic Analysis

1117 Commercial Bronze Standard for Optical Emission and 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 and 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.g)

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 and 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) and 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 and 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 and 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 and 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 and Omega-6 FattyAcids

3275 Omega-3 and 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, and 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

4354 Freshwater Lake Sediment Environmental Radioactivity Standard

4356 Ashed Bone (Radioactivity)

4357 Ocean Sediment Powder

4358 Ocean Shellfish Radionuclide Standard

4359 Seaweed Radionuclide Standard

4361C Hydrogen-3 Radioactivity Standard

4915F Cobalt-60 Radioactivity Standard Solution

4919I Strontium-90 Radioactivity Standard 

4926E Hydrogen-3 Radioactivity Standard

4927g Hydrogen-3 Radioactivity Standard

4929F Iron-55 Radioactivity Standard

4943 Chlorine-36 Radioactivity Standard 

4949d Iodine-129 Radioactivity Standard

4965a Radium-226 Radioactivity Standard

4966A Radium-226 Radioactivity Standard 

4967A Radium-226 Radioactivity Standard Solution

4969 Radium-226 Radioactivity Standard 

4990C Oxalic Acid 

5001 Two-Dimensional Grid Photomask Standard

6002b Multi-Junction Thermal Converter - 1040 ohms

6003b Portable Vacuum Standard 1 Pa to 700kPa (Commercial Mercury Manometer Replacement)

6003a Portable Vacuum Standard

8010 Sand for Sand Sieve Analysis

8011 Gold Nanoparticles (Nominal 10 nm Diameter)

8017 Polyvinylpyrrolidone Coated Silver Nanoparticles (Nominal Diameter 75 nm)

8091 Scanning Electron Microscope Sharpness Standard

8095 Si1-xGex Films on Si

8281 Single-Wall Carbon Nanotubes (Dispersed, Three Length-Resolved Populations)

8321 Peptide Mixture for Proteomics

8323 Yeast Protein Extract

8366 EGFR and MET Gene Copy Number Standards for Cancer Measurements

8375 Microbial Genomic DNA Standards for Sequencing Performance Assessment

(MG-001, MG-002, MG-003, MG-004)

8391 Human DNA for Whole-Genome Variant Assessment (Son of Eastern European Ashkenazim Jewish Ancestry)

8392 Human DNA for Whole-Genome Variant Assessment (Trio of Eastern European Ashkenazim Jewish Ancestry)

8393 Human DNA for Whole-Genome Variant Assessment (Son of Chinese Ancestry)

8394 Tissue Engineering Reference Scaffolds for Cell Culture

8398 Human DNA for Whole-Genome Variant Assessment (Daughter of Utah/European Ancestry)

8420 Electrolytic Iron

8441a Wheat Hardness (kernel form)

8445 Spray-Dried Whole Egg for Allergen Detection

8446 Perfluorinated Carboxylic Acids and Perfluorooctane Sulfonamide in Methanol

8447 Perfluorinated Sulfonic Acids in Methanol

8455 Pyrite Ore Bioleaching Substrate

8480 Secondary Ferrite Number Standard - Low Range

8481 Secondary Ferrite Number Standard - High Range

8491 Sugarcane Bagasse Whole Biomass Feedstock

8492 Eastern Cottonwood Whole Biomass Feedstock

8493 Monterey Pine Whole Biomass Feedstock

8494 Wheat Straw Whole Biomass Feedstock

8495 Northern Softwood

8496 Eucalyptus Hardwood

8505 Vanadium in Crude Oil

8509 Moisture in Methanol

8529 IAEA-S-3 (Sulfur Isotopes in Silver Sulfide)

8536 GISP-Water

8537 SLAP-Water Light Stable Isotopic Standard

8539 NBS22 Oil (Carbon and Hydrogen Isotopes in Oil)

8540 IAEA-CH-7 (Carbon and Hydrogen Isotopes in Polyethylene Foil)

8541 USGS24 Graphite

(Carbon Isotopes in Graphite)

8542 IAEA-CH-6 Sucrose 

(Carbon Isotopes in Sucrose)

8546 NBS28 (Silicon and Oxygen Isotopes in Silica Sand)

8547 IAEA-N-1

(Nitrogen Isotopes in Ammonium Sulfate)

8548 IAEA-N-2 (Nitrogen Isotopes in Ammonium Sulfate)

8550 USGS25

(Nitrogen Isotopes in Ammonium Sulfate)

8551 USGS26

(Nitrogen Isotopes in Ammonium Sulfate)

8552 NSVEC

(Nitrogen Isotopes in Gaseous Nitrogen)

8553 IAEA-S-4 (Soufre De Lacq)

(Sulfur Isotopes in Elemental Sulfur) 

8555 IAEA-S-2 (Sulfur Isotopes in Silver Sulfide)

8556 NBS123

(Sulfur Isotopes in Sphalerite)

8557 NBS127 

(Sulfur and Oxygen Isotopes in Barium Sulfate)

8558 USGS32 Nitrogen and Oxygen Isotopes in Nitrate

8562 CO2-13C-enriched, Paleomarine Origin (Carbon Dioxide)

8563 CO2-13C-depleted, Petrochemical Origin (Carbon Dioxide)

8564 CO2-Biogenic, Modern Biomass Origin (Carbon Dioxide)

8568 USGS34 Nitrogen and Oxygen Isotopes in Nitrate

8569 USGS35 Nitrogen and Oxygen Isotopes in Nitrate

8574 L-glutamic Acid USGS41 (Heavy Carbon and Nitrogen Isotopes in L-glutamic Acid)

8599 Henderson Molybdenite

8610 Mercury Isotopes in UM-Almaden Mono-Elemental Secondary Standard

8632 Ultra Fine Test Dust (UFTD)

8634 Ethylene Tetrafluoroethylene for Particle Size Distribution and Morphology

8642a FDA Saxitoxin Dihydrochloride Solution

8671 NISTmAb, Humanized IgG1κ Monoclonal Antibody

8680 Paint on Fiberboard, Nominal 1 to 2 mg/cm2 Lead

8704 Buffalo River Sediment

8785 Air Particulate Matter on Filter Media

8786 Filter Blank for RM 8785

8820 Scanning Electron Microscope Scale Calibration Artifact

8850 Zeolite Y

8851 Zeolite A

8852 Ammonium ZSM-5 Zeolite

8983 Silicon Nitride 

8988 Titanium Dioxide Powder - Particle Size Distribution

C2415a Battery Lead (UNS 52770)

C1252a Phosphorus Deoxidized Copper - Cu IX

C1115 Commercial Bronze A (block)

C1117 Commercial Bronze C (block)

C1137a White Cast Iron

C1145a White Cast Iron

C1151a Stainless Steel 23Cr-7Ni

C1152a Stainless Steel 18Cr-11Ni

C1153a Stainless Steel 17Cr-9Ni

C1154a Stainless Steel 19Cr-13Ni

C1173 Cast Steel 3

C1248 Nickel-Copper Alloy

C1251a Phosphorus Deoxidized Copper - Cu VIII

C1253a Phosphorus Deoxidized Copper - Cu X

C1285 LA Steel (A242) (mod.)

C1290 High-Alloy White Cast Iron (HC-250+V)

C1291 High-Alloy White Cast Iron (Ni-Hard, Type I)

C1292 High-Alloy White Cast Iron I (Ni-Hard, Type IV)

C1296 Stainless Steel

C2400 Fe-Cr-Ni Alloy UNS J92180 (disk form)

C2402 Hastelloy7C

C2416 Bullet Lead

C2417 Lead-Base Alloy

C2418 High-Purity Lead

C2424 Ductile Iron C

NIST标准品 美国国家标准技术研究院

--------------------------------------------------------------------------------------

-----------------------------------------------------------

-----------------------------------------------------------

-----------------------------------------------------------

-----------------------------------------------------------

-----------------------------------------------------------
聚乙二醇修饰化学和PEG修饰剂选择指南
移液器的日常清洗和维护保养
样品瓶和隔垫的选择指南