Laboratory Fortification Standard Back Catalog number: 59172 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678278 Chlorthiophos, 100 µg/ml, Acetonitrile, 5ml Price on request 682489 3-Heptanone, 1000mg Price on request 672926 Dicamba, 250mg Price on request