WS Organonitrogen Pesticides Back Catalog number: 38028 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2951.12-10MG Isoproturon-d3 (N-methyl-d3) Price on request 53037 Calibration Standard Mix 5 Price on request 677627 Ioxynil-octanoate, 10 µg/ml, Ethyl acetate, 10ml Price on request