EPA Method 507 Analyte Mix #8 Back Catalog number: 94131 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673652 Parathion-ethyl, 100 µg/ml, Ethyl acetate, 5ml Price on request 676057 Ochratoxin A, 10.0 µg/ml, Acetonitrile, 5ml Price on request 9194.17-K-ME Omeprazole-d3 (benzimidazole-4,6,7-d3),1000 µg/mL,MeOH,1mL Price on request