Benzidine, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 679880 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended MICQC6 WS (drinking water) Quantitative E.Coli - QC Price on request 79082 EPA Method 8330 Analyte Price on request E888000 17ß-Estradiol, 50mg Price on request