Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9723.29-100-IO Nonacosanoic acid, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 4250-38-8 Price on request MBDE-47 2,2',4,4'-Tetrabromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane Price on request 3511.19-100-AN Tetramethrin Price on request