EPA Methods Standards

Short List Appendix IX, Phenols Mix, SPEX CertiPrep™

ISO/IEC Guide 34 Certified, NIST-Traceable Certified Reference Material

Acrolein and Acrylonitrile in Methanol Purge and Trap, SPEX CertiPrep™

Acetonitrile, SPEX CertiPrep™

Mixed Calibration Standards A For Environmental Analysis, Set of 5, SPEX CertiPrep™

Mixed Calibration Multi-Element Standards with Mercury for AA & ICP, 125 mL, SPEX CertiPrep™. ISO Guide 34 Certified, NIST Traceable Certified Reference Materials. Supplied with comprehensive Certificate of Analysis.

EPA Method 515.4 Herbicide Mixture 409 10-100 μg/mL in Methyl tert Butyl Ether, Dr. Ehrenstorfer

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Acetonitrile, for HPLC-MS

CAS: 75-05-8 Molecular Formula: C2H3N MDL Number: 1878 InChI Key: WEVYAHXRMPXWCK-UHFFFAOYSA-N PubChem CID: 6342 ChEBI: CHEBI:38472 IUPAC Name: acetonitrile SMILES: CC#N

Decachlorobiphenyl, SPEX CertiPrep™

EPA Method 533 PFAS Mixture 10 μg/mL in Methanol:Water, Dr. Ehrenstorfer

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Tuning Solution, SPEX CertiPrep™

ISO/IEC Guide 34 Certified, NIST-Traceable Certified Reference Material

Dr. Ehrenstorfer EPA Method 533 Isotope Dilution Standard 0.5 to 2 μg/mL in Methanol:Water

Certified reference materials available in multiple formats, including multi-component regulatory mixtures, to power your food and environmental analysis with traceable, ISO-accredited quality.

EPA Method 5035, Low Level Clear Vial, 20% Bisulfate Solution, Stir Bar, Tared, 5 mL, 72/cs, Dr. Ehrenstorfer

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EPA Method 505 Stock Standard Mixture 375 100 μg/mL in Toluene, Dr. Ehrenstorfer

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EPA Method 1631, 8 oz Amber Glass, 12/cs, Dr. Ehrenstorfer

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EPA Method 8270 Appendix IX Mixture 1 with Phentermine 2000 μg/mL in Dichloromethane, Dr. Ehrenstorfer

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EPA Method 552.3 UCMR 4 200-2000 ug/mL in Methyl tert-butyl ether, Dr. Ehrenstorfer

Discover Dr. Ehrenstorfer’s certified reference materials: available in multiple formats, including multi-component regulatory mixtures, to power your food and environmental analysis with traceable, ISO-accredited quality