EPA Method 524.3 - Surrogate Standard Back Catalog number: 95489 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10130.11-150-IO 2,3,4-Trimethylbenzothiophene, 150µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 80421-98-3 Price on request 10393.24-5MG Norbixin Price on request 682850 Pyrogallol, 1000mg Price on request