EPA Method 551.1 Internal Standard

Senecionine,50 µg/mL,dried down,1mL,

PBB-No. 1, 10 ng/µl, 10ml

Custom chlorinated hydrocarbon mixture 100µg/mL each in dichloromethane 3959.7 2-Chorotoluene 3960.7 4-Chlorotoluene 1993.10 1-Chloronaphthalene