Ethanol standard in serum,4.0g/L,serum, 1.5mL

25-Hydroxyvitamin D2-d6, 50µg/ml in MeOH, 1ml

n-Alkane Standard

1,3,5,7,9,11-Hexabromocyclododecane, isomer mixture, 50µg/ml in Toluene, 1ml