Internal Standard Stock Solution, 1.2ml, nonane Back Catalog number: EPA-23ISS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 18000-0302-100AN5 Cyprofloxacin-HCl, 100µg/ml in Acetonitrile, 5ml Price on request 3461.4-100-CY Naled Price on request NWTM-25.4 Water - Trace elements, 500ml Price on request