Surrogate Standard Back Catalog number: 98775 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 82493 EPA Method 1666Labeled Standard Price on request 3015.5-1ML 1-Pentene, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 109-67-1 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