EPA Method 548.1 Analyte Back Catalog number: 30277 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59960 Selenium (Se) Price on request 679857 2,2-Bis(bromomethyl)-1,3-propanediol, 100 µg/ml, Price on request 682992 2-Ethyl-6-methyl-2-chloroacetanilide, 50mg Price on request