[13C22 15N2]-Tetracycline

o-Toluidine,100 µg/mL,acetonitrile,1mL,

EPA 8041A Surrogate Standard S-4382 1mg/mL in isopropanol, 1 mL, 5 x 1mL, 5mL 2,4-Dibromophenol

Phenkapton, 100 µg/ml, Acetonitrile, 1ml