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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
30051
200 μg/mL each in P&T methanol, 1 mL/ampul
ea.
30213
2,000 μg/mL each in P&T methanol, 1 mL/ampul
ea.
30488
2,000 μg/mL each in P&T methanol (m-xylene and p-xylene at 1,000 μg/mL), 1 mL/ampul
ea.