MA - EPH Matrix Spike Back Catalog number: 92113 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 30103 EPA Method 551.1 Internal Standard Price on request 2522.8-100MG 4-Hydroxyphenylacetic acid, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 156-38-7 Price on request 1149.29-10MG n-Nonacosane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 630-03-5 Price on request