GC/MS Calibration Standard Back Catalog number: 43026 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674232 Fenthion-oxon, 10.0 µg/ml, Acetonitrile, 1ml Price on request C13645000 Fipronil, certified, 0.1g Price on request 677990 Profenofos, 100 µg/ml, Toluene, 1ml Price on request