WHO 532 Standard Back Catalog number: 94154 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679445 Dieldrin, 100 µg/ml, Methanol, 1ml Price on request FRS-022S Tetrachlorobisphenol A, 100µg/ml in Toluene, 1ml Price on request DF-IS-B200 Mass-Labelled PCDD/PCDF Internal Standard Solution, 1.2ml, nonane Price on request