Nitrate as NO3-, 1000µg/ml in water, 100ml Back Catalog number: 54200 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended DF-247-S 2,4,7-Trichlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 683045 Phenmedipham-ethyl, 100 µg/ml, Acetonitrile, 1ml Price on request 57833 Arsenic (As) Price on request