Malathion monocarboxylic acid, 100mg

Daily Quality Control Standard (with 4 Fluorinated Compounds Internal Standard) 14 Analytes + 4 ISTD, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% n-Hexane 12 Toluene 9 n-Heptane 17

4,4'-DDE, 100 µg/ml, Methanol, 1ml

n-Alkanes C10-C40 (even + pristane/phytane) 18 Analytes, each 100µg/ml in cyclohexane; units: 1x1mL, 5x1mL, 10x1mL This standard includes all the even n-paraffins + pristane and phytane. n-Decane C10 n-Dodecane C12 n-Tetradecane C14 n-Hexadecane C16