EPA Method 515.1 Internal Standard

Ethylmethyl sulfide, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 624-89-5

1,2,4-Trichlorobenzene, 1000µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 120-82-1

2-Hydroxyatrazine, 100µg/mL in MeOH:AC (98:2),1ml