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| Inorganic and Organic Standards for Calibration, R&D, Quality Control, Internal Standards, Surrogates, Proficiency Evaluations. Catalog of custom-grade high purity standards for ICP, ICP/MS, DCP, AA, GFAA. Chromatography standards for IC, GC, GC/MS. Environmental calibration and QC plus quality control standards for EPA methodologies. |
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