Multi-Element Internal Std., 10ug/ml, 4x25ml

EPA 525 Cal Mix 1

4,4'-Dichlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 2050-68-2

5-Ethyl-7-methylbenzo[b]carbazole, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 4133-22-6