EPA Method 552.2 - Surrogate Standard Back Catalog number: 30109 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93539 Volatile Standard - 5X Price on request 1749.16-K-IO 3-n-Dodecylthiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 104934-52-3 Price on request 9914.21-10MG Perphenanzine-d4, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 155593-75-2 Price on request