EPA Method 525.2 - 526 Internal Standard

5-tert-Butyl-m-xylene, 1000µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 98-19-1

Tetrachloroethene, 100 µg/ml, Methanol, 5ml

2-Methyl-4-nitronaphthalene, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 13615-38-8