Calibration Std. #1 Back Catalog number: 59964X Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2941.9-100-IO Endosulfan-I-d4, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 203645-57-2 Price on request 683391 4-Methylbenzophenone, 1000mg Price on request 3722.18-K-ME Dodecylbenzenesulfonic acid, mixture of linear C10-13, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 27176-87-0 Price on request