EPA Method 525.2 Pesticide Level 4 Back Catalog number: 92843 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675634 Metosulam, 100 µg/ml, Acetonitrile, 5ml Price on request 679464 Atrazine, 100 µg/ml, Methanol, 1ml Price on request DF-LCS-B200 Mass-Labelled PCDD/PCDF Solution/Mixture, 1.2ml , nonane Price on request