Perchlorate Level 2 Back Catalog number: 59340 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677720 Isoxadifen-ethyl, 100mg Price on request 10649.11-100-5AN Chloramphenicol Price on request DF-SS-A100 Mass-Labelled PCDD Sampling Spike Solution, 1.2ml x 100ng/ml, nonane Price on request