Propazine, 100µg/ml in Acetonitrile, 1ml Back Catalog number: S-13108A1-1ML Availability: In the manufacturer's stock Price on request - + Recommended 2189.4-50-ME Perfluorobutyric acid, sodium salt, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2218-54-4 Price on request 13705-100WS5 Haloacetic acids - Mix 5, 100µg/ml in Water, 5ml Price on request 95502 BTEX & Naphthalene & Tetrachloroethene Price on request