General Minerals Mix

Phthalic acid, benzylbutyl ester, certified, 0.25g

Androstenedione, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 63-05-8

Method 200.8 / 1638 / 1640 Internal Standard, in 2%-HNO3/Water, 4x25ml