Total Kjeldahl Nitrogen as (N) Back Catalog number: 50251 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9436.12-100 Acifluorfen, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 5059-66-6 Price on request 8864.8-K-IO Quinoxaline, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. Price on request XA15220000AL Mevinphos, 100µg/mL in Acetonitrile, 1ml Price on request