EPA Method 8141 / 1618 Pesticide Mix B Back Catalog number: 91398 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3130.5-K-IO Pentanoic acid (Valeric), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 109-52-4 Price on request 8441.14-10MG 1-Methyl-5-nitro-2-phenylbenzimidazole, neat, Solvent-neat, Unit 10MG, # of units-5, Cas.no. 20648-09-3 Price on request 73913 Losartan, 1000µg/ml in MeOH, 1ml Price on request