EPA Method 550 Analytes Back Catalog number: 31051 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 33042 EPA Method 531.1 - Analytes Mixture Price on request 1751.15-100-IO 2,4,8-Trimethyldibenzothiophene, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1210-52-2 Price on request 50593 Copper (Cu) - 10 PPM Price on request