Interference Standard 1 Back Catalog number: 53039 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677723 D7-Beflubutamid, 100 µg/ml, Acetonitrile, 1ml Price on request 3425.9-100-AN Isobenzan Price on request 11780.10 1,2,3,5,7-Pentachloronaphthalene,,,, Price on request