BTEX Standard Back Catalog number: 98418 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 91558 1-Chloro-3-fluorobenzene Price on request 0207.22-200-T Benzo[a]tetracene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 226-88-0 Price on request XA11530000AL Chlorotoluron, 100µg/mL in Acetonitrile, 1ml Price on request