Internal Standard Stock Solution, 1.2ml, nonane Back Catalog number: EPA-1668IS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 678384 Deltamethrin, 100 µg/ml, Acetonitrile, 5ml Price on request 2770.7-100-ME Simazine, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 122-34-9 Price on request 674640 Folpet, 250mg Price on request