Interference Standard 4 Back Catalog number: 52041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675545 Chlorbufam, 100 µg/ml, Acetonitrile, 5ml Price on request 677539 Terbuthylazine-desethyl, 100mg Price on request 59179 TOC Calibration Standard (C) Price on request