QC Standard 3 Back Catalog number: 53086 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-A40 Mass-Labelled PCDD Internal Standard Solution, 1.2ml x 40ng/ml, nonane Price on request 1981.12-K-5ME Tri-n-butyltin chloride, 1000µg/mL, Solvent-methanol, Unit 5mL, # of units-1, Cas.no. 1461-22-9 Price on request 54169 Silica (SiO2) Price on request