EPA Method 552.1 - Surrogate Standard Back Catalog number: 31056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 57082R Lead (Pb) Price on request 71243 4-Aminophenol Price on request 8230.13-50-IO 9-Chloro-9H-fluorene, 50µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 6630-65-5 Price on request