Solution #2

Doxycycline hyclate, 100 µg/ml, Methanol, 1ml

Calibration standard with ETBE 10 Analytes, each Wt.% as listed in isooctane; units: 1x1mL, 5x1mL Name Wt.% Name Wt.% Pentene 1.0 Decane 1.0 Hexene 1.0 Undecane 1.0 Heptene 1.0 Dodecane 1.0 Octene 1.0 Isooctane 86

Metformin-d6-HCl, 100μg/ml in MeOH, 5ml