Ofloxacin, certified, 0.1g

2,3-Dichloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

PCB Calibration Solution, 100µg/ml in Acetone, 1ml

2,4,5-Tribromophenol, 1.2ml x 100ug/ml, toluene