Materials with known <sup>15</sup>N/<sup>14</sup>N isotopic composition

Title	Category	Description	Release Date
IAEA-N-1	Pure Substance	Ammonium Sulfate	-
IAEA-N-2	Pure Substance	Ammonium Sulfate	-
IAEA-NO-3	Pure Substance	Potassium Nitrate	-
USGS32	Pure Substance	Potassium Nitrate	-
USGS34	Pure Substance	Potassium Nitrate	-
USGS35	Pure Substance	Sodium Nitrate	-
USGS25	Pure Substance	Ammonium Sulfate	-
USGS26	Pure Substance	Ammonium Sulfate	-
NSVEC	Gas	Nitrogen Gas-N₂	-
IAEA-305	Pure Substance	¹⁵N labelled ammonium sulfate	-
IAEA-310	Pure Substance	¹⁵N labelled urea	-
IAEA-311	Pure Substance	N-labelled ammonium sulfate	-

Reference Products

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