Internal Reference Standard Back Catalog number: 52187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended XA14960000AL Methabenzthiazuron, 100μg/mL in Acetonitrile, 1ml Price on request 90493 Styrene Price on request XA20830000AL Indeno[1,2,3-c,d]pyrene, 100µg/mL in Acetonitrile, 1ml Price on request