Interference Standard 1 Back Catalog number: 53039 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79269 Dibenzo(a,l)pyrene Price on request DF-IS-C200 Mass-Labelled PCDD/PCDF Internal Standard Solution, 1.2ml, nonane Price on request 59036 Lithium 6 (Li6) Price on request