EPA Method 507/525 Analytes Mix #2 Back Catalog number: 30083 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9943.20-50-IO C20 Triaromatic ster-14(15)-ene, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request C244100 Ceftazidime Pentahydrate, 500mg Price on request 674750 1,2,3,4-Tetrachlorobenzene, 100mg Price on request