EPA Method 552.1 - Surrogate Standard Back Catalog number: 31056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10357.19-10MG Norclomipramine hydrochloride Price on request 0459.15-K-IO 1-Methylanthracene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 610-48-0 Price on request HPCB-3006N 4-Hydroxy-2',4',6'-trichlorobiphenyl, 10mg Price on request