EPA Method 507/525 Analyte Mix #1 Back Catalog number: 30082 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93023 n-Octacosane Price on request 8645.12-50-T 1,3,8,9-Tetrachlorodibenzo-p-dioxin, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. Price on request 2518.7-K-ME Theophylline,1000 µg/mL,MeOH,1mL, Price on request