Additional Internal Standard Solution, 1.2ml, toluene

Formaldehyde-DNPH Level 4 (2ug/mL)

1,2,4,6,7-Pentachlorodibenzo-p-dioxin, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no.

Methoxychlor, 100 µg/ml, Acetone, 5ml