Interference Standard 4 Back Catalog number: 52041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3465.12-100-T Oxadiazon-hydroxy , 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. Price on request 681318 Propazine-2-hydroxy, 100mg Price on request 71954 2,3-Dimethylheptane Price on request