国家标准物质-标准物质实验室【北京华研】
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USGS32 Potassium NitratePotassium Nitrate Potassium Nitrate 0.5g
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NBS18 CalciteCalcite Calcite 0.5g
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IAEA-CO-8 CalciteCalcite Calcite 0.5g
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IAEA-603 CalciteCalcite Calcite 0.5g
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IAEA-602 Benzoic AcidBenzoic Acid Benzoic Acid 1g
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IAEA-601 Benzoic AcidBenzoic Acid Benzoic Acid 1g
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USGS32 Potassium NitratePotassium Nitrate Potassium Nitrate 0.5g
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IAEA-311 N-labelled ammonium sulfateN-labelled ammonium sulfate N-labelled ammonium sulfate 0.1g
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NSVEC Nitrogen GasNitrogen Gas Nitrogen Gas 7ml
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IAEA-600 CaffeineCaffeine Caffeine 0.5g
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