[13C12]Dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

2-Fluorobiphenyl

Hexamethylenetetramine

Daily Quality Control Standard (without Internal Standard) 13 Analytes, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name: Wt. % Name Wt. % 1232.6 n-Hexane