2,3,5,6-Tetrabromo-p-xylene, 1.2ml x 50ug/ml , toluene Back Catalog number: PTBX Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 681929 Methothrin, 100µg/ml in Acetonitrile, 5ml Price on request 82508 EPA Method 8250/8250A Cal Check Cmpds Acids Price on request 79302 4,4’-Methoxychlor Price on request