Methamidophos, 100 µg/ml, Acetonitrile, 5ml

25-Hydroxyvitamin D2 (95%)

n-C17/(n-C17 + n-C27) (Integration control) 2000 µg + 500 µg in isooctane solution in 1mL isooctane n-Heptadecane/n-Heptacosane = 4:1

Conductance @ 20°C [10,000µmho/cm]