EPA Method 8315 Calibration Mix #1 Back Catalog number: 83509 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 672870 Metolachlor, 100mg Price on request 678220 1-(4-Isopropylphenyl)urea, 100 µg/ml, Acetonitrile, 1ml Price on request 2352.16-100-ME Tetrabutylammonium bromide, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1643-19-2 Price on request