EPA Method 515.1 Internal Standard

2,4,4,5-Tetrachlorobiphenyl (BZ-74)

3,3-Dimethylhexane, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 563-16-6

Performance Control Mixture 4 Analytes each Wt.% as listed; units: 1x1mL, 5x1mL neat Name Wt. % Name Wt. % n-Hexadecane 75.0 Tetralin 3.0 Naphthalene 2.0