IP 391-95 Calibration Curve 4 Analytes, each Wt.% as listed in n-Heptane; unit: 4x1mL one of each Std. Analyte Std. 1 Std.2 Std.3 Std.4 (mg/mL) (mg/mL) (mg/mL) (mg/mL) 1301.6 Cyclohexane 50 20 5 1 1267.8 o-Xylene 40 10 2.5 0.5 0712.11 1-Methylnaphth