EPA 1620 Standard 5 Back Catalog number: 53143 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DD-1247/8-S 1,2,4,7/1,2,4,8-Tetrachlorodibenzo-p-dioxin mix, 1.2ml x 50ug/ml, nonane Price on request 0416.13-150-CYX10 n-Tridecane, ?13C: -33.47, 150ug/ml, Solvent-cyclohexane, Unit 1mL, # of units-10, Cas.no. 629-50-5 Price on request 50735 Total Dissolved Solids Price on request