EPA Method 552.2 - Surrogate Standard Back Catalog number: 30108 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended H942565 (2R)-2-Hydroxyglutaric Acid Disodium Salt, 25mg Price on request 0964.10-K-CY 3-Methylnonane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 5911-04-6 Price on request 73154 Tridecafluorohexane-1-sulfonic acid Price on request