Ammonia as N

1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin , 1.2ml x 50ug/ml, nonane

Daily Quality Control Standard (without Internal Standard) 14 Analytes, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% n-Hexane 12 Toluene 9 n-Heptane

Trimethylenesulfide, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 287-27-4