Retention Time Verification Standard Back Catalog number: 51136 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 15900-0940-100AN5 Chlortoluron, 100µg/ml in Acetonitrile, 5ml Price on request 673449 Terbuthylazine, 100 µg/ml, Acetonitrile, 5ml Price on request 70174 Ethanol Price on request