EPA Method 507 Analyte Mix #1 Back Catalog number: 30182 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended M4H61 2',3',4',5'-Tetrachloro-4-[13C12]biphenylol, 1.2ml x 50ug/ml, toluene Price on request 52041 Interference Standard 4 Price on request 8979.47-K-T 3-Chloro-1,2-propandiol-dibehenate-d5 Price on request