EPA Method 8121 Surrogate Standard Back Catalog number: 81204 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93126 EPA Method 622/8140 - Analytes Price on request 674464 Niclosamide, 100mg Price on request 9679.9-10MG DL-4-Fluoroamphetamine, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 459-02-9 Price on request