Perchlorate Level 4

Hexachlorobenzene (HCB), 100µg/ml in CY, 5ml

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

Tributyl phosphate, 10.0 µg/ml, Cyclohexane, 10m