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SRMs for Basic and Applied Research

SRM Name
982 Equal Atom Lead Isotopic Standard
983 Radiogenic Lead Isotopic Standard
2087 Medical CT Dimensional Standard (in preparation)
2088 Radiodensity for Medical CT (planned)
3164 Thorium Standard Solution
3159 Uranium Standard Solution
4222C Carbon-14 (as hexadecane)
4226D Nickel-63 Radioactivity Solution
4233E Cesium-137 Solution
4239 Strontium-90 Radioactivity   Standard
4251C Barium-133 Solution
4274 Holmium-166m Gamma-ray Emission Rate Standard
4288B Technetium-99 Radioactivity Solution
4320A Curium-244 Solution
4321C Natural Uranium Solution
4322C Americium-241 Solution
4323B Plutonium-238 Solution
4324B Uranium-232 Solution
4326 Polonium-209 Solution
4328C Thorium-229 Solution
4329 Curium-243 Solution
4330C Plutonium-239 Radioactivity Solution
4332E Americium-243 Radioactivity Solution
4334I Plutonium-242 Solution
4337 Lead-210 Radioactivity Std
4338A Plutonium-240 Solution
4339A Radium-228 Solution
4340B Plutonium-241 Solution
4341 Neptunium-237 Solution
4342A Thorium-230 Radioactivity Standard
4361C Hydrogen-3 Water
4370C Europium-152 Solution
4915F Cobalt-60 Solution
4919I Strontium-90 Solution
4926E Hydrogen-3 Water
4927F Hydrogen-3 Water
4929F Iron-55 Solution
4943 Chlorine-36 Solution
4947C Hydrogen-3 Toluene
4949C Iodine-129 Solution
4965 Radium-226 Solution
4966A Radium-226 Solution
4967A Radium-226 Solution
4969 Radium-226 Solution
4971 Radon-222 Emanation Standard
4972 Radon-222 Emanation Standard
4973 Radon-222 Emanation Standard
4974 Radon-222 Emanation Standard
4990C Oxalic Acid Powder

Link to table: https://www-s.nist.gov/srmors/viewTableV.cfm?tableid=124