Interference Standard 4 Back Catalog number: 52041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72552 1,2,4-Trimethyl-5-nitrobenzene Price on request 50219 Potassium Ferricyanide (III) (CN) Price on request S-4037-10K-10IO 2-Bromothiophene in isooctane, Blank Units: 5x1mL ampoules Price on request