Tetrapentyltin Internal Standard Back Catalog number: 82489 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-LCS-B Mass-Labelled PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request 70431 Phthalic anhydride Price on request 43018 Phenanthrene-d10 Price on request