Pesticide Matrix Spike Solution Back Catalog number: 20120 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 672969 Polymyxin B sulfate, 100mg Price on request 1846.20-1G 1-Pyrenebutyric acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 3443-45-6 Price on request 40116 Acenaphthene, 100µg/ml in Acetonitrile, 1ml Price on request