Precision and Recovery Stock Solution, 1.2ml, nonane

4,4'-Diaminobiphenyl,100 µg/mL,acetonitrile,1mL,

d2 C29 alpha alpha alpha (20R)-Ethylcholestane, 10µg/mL in Osooctane, 1ml

Swep, 10.0 µg/ml, Acetonitrile, 10ml