EPA Method 551.1 Surrogate Standard Back Catalog number: 31102 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675583 Thiofanox-sulfoxide, 10.0 µg/ml, Acetonitrile, 1 Price on request 1230.26-10-IO d2 C26 Triaromatic Sterane, 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 59394 Anions Mix Price on request