EPA Method 418.1 - TPH IR Standard Back Catalog number: 98245 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11916.13-K-ME Dembrexine hydrochloride monohydrate,1000 µg base/mL,MeOH,1mL, Price on request 10412.4-K-ME Sodium DL-3-hydroxybutyrate-3,4,4,4-d4 Price on request 681381 Ethirimol, 100mg Price on request