CWA Nitrate & Nitrite Back Catalog number: 55130 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675913 1-(3,4-Dichlorophenyl)-3-methylurea, 100mg Price on request S-4140-75-IO Nitrogen Calibration Set-Low Boiling Solvents Units: 1x1mL ampoules or 10mL screw-capped bottle Nitrogen introduced using Pyridine Catalogue No. Concentration Matrix: isooctane mg/kg (ppm) S-4140-0 Blank S-4140-03 0.3 Price on request MDF-23 2,3-Dichloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene Price on request