Interference Standard 4 Back Catalog number: 52041A Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1501.24-K-IO n-Octadecylcyclohexane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 4445-06-1 Price on request P838289 Propylparaben-d4, 1mg Price on request 11796.15-10MG 9-Carboxynonylpyridium-d5 bromide,neat,neat,10mg, Price on request