Calibration Standard Kit Back Catalog number: 53089 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-LCS-B40 Mass-Labelled PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request 72062 Dibenzofuran-d8 Price on request 59760 Parent for (Anions Mix #1) Price on request