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Certified reference materials (CRMs) manufactured and QC-tested in ISO-accredited labs satisfy your ISO requirements.
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Catalog #Conc. In Solvent And VolumeUnits
31004
1,000 μg/mL each in methanol, 1 mL/ampul
ea.
31004.15
1,000 μg/mL each in methanol, 1 mL/ampul
15-pk.
31074
5,000 μg/mL each in methanol, 1 mL/ampul
ea.
31084
5,000 μg/mL each in methanol, 5 mL/ampul
ea.