Interference Standard 4 Back Catalog number: 52041A Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1113.12-100-T 5-Nitroacenaphthene, 100µg/mL, Solvent-toluene, Unit 1ml, # of units-1, Cas.no. 602-87-9 Price on request 94300 Herbicide Acid Standard Price on request 3567.22-10MG 5,7,12,14-Pentacenetetrone, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 23912-79-0 Price on request