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IRMM-643Sulfur-32 spike, nitrate solution
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IRMM-635Strontium-84 spike, nitrate solution
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IRMM-634Iron (natural) spike, chloride solution
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IRMM-632Copper-65 spike, nitrate solution
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IRMM-625Chromium (natural) spike, chloride solution
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IRMM-624Chromium-50 spike, chloride solution
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IRMM-622Cadmium-111 spike, nitrate solution
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IRMM-621Cadmium-111 spike, nitrate solution
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IRMM-620Iron-57 spike, chloride solution
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IRMM-619Rubidium (natural) spike, nitrate solution
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IRMM-618Rubidium-87 spike, nitrate solution
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IRMM-615Lithium-6 spike, chloride solution
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IRMM-611Boron (natural) spike, aqueous solution
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IRMM-610Boron-10 spike, aqueous solution
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IRMM-541Oxide glass (50 ppm U)