EPA Method 500 Series Internal Std #4 Back Catalog number: 30003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2033.12-50-T 1,2,4-Trichlorodibenzo-p-dioxin, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 39227-58-2 Price on request 50671 Anion Mix #1 Price on request 79413 n-Tetracontane Price on request