N-Nitrosodiethanolamine, 100 µg/ml, Methanol, 5m

Ofloxacin, 100µg/ml in Acetonitrile, 5ml

1,1,2-Trichlorotrifluoroethane

Custom mix of PBB, 10 components each 0.03mg/mL in a suitable solvent: 3091.12 4-Bromobiphenyl PBB-3 3096.12 4,4'-Dibromobiphenyl PBB-15 3097.12 2,2',5-Tribromobiphenyl PBB-18 3103.12 2,2',5,5'-Tetrabromobiphenyl PBB-52 3107.12 2,2',4,5',6-Pentabromo