4,4'-DDE, 100 µg/ml, Ethyl acetate, 5ml

Chlorfenvinphos, 100µg/ml in Cyclohexane, 5ml

Quercetin 3-Sulfate Potassium Salt (>90%), 2mg

Daily Quality Control Standard (with 3 Fluorinated Compounds Internal Standard) 14 Analytes + 3 ISTD, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% n-Hexane 12 Toluene