WS Low Level Perchlorate Back Catalog number: 55210 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678498 Quinalphos, 100 µg/ml, Acetonitrile, 1ml Price on request 680362 1,2,3-Trichlorobenzene, 100 µg/ml, Cyclohexane, Price on request DF-ST-B Native PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request