4-n-Octylphenol-mono-ethoxylate, 10.0 µg/ml, Acet

d4 C27 alpha alpha alpha (20R)-Cholestane, 100µg/mL in Isooctane, 5 x 1ml

2,2',5,5'-Tetrabromobiphenyl, 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