EPA Method 548 Analyte Back Catalog number: 30147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9173.23-K-DMF Morphine-3-glucuronide, 1000µg base/mL, Solvent-DMF, Unit 1mL, # of units-1, Cas.no. 20290-09-9 Price on request 93539 Volatile Standard - 5X Price on request X9183 2-Picoline Price on request