EPA Method 8121 Surrogate Standard Back Catalog number: 81204 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 98681 Pesticides Calibration GC-MS/MS Price on request C15124400 4-Methyl-1-pentene, 1ml Price on request 2238.18-5MG Zearalenone, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 17924-92-4 Price on request