IP 391-95 Calibration Level 4 Back Catalog number: 98404 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679768 2,4,6-Trichlorophenoxyacetic acid, 10 µg/ml, Acet Price on request 72834 Sulfentrazone Price on request 0151.17-500-IO 4-n-Pentyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 147792-34-5 Price on request