Ammonia (as Nitrogen) Standard, 1000 ppm, (1mL = 1mg N, 1mL = 1.22mg NH_)
Manufacturer: LabChem
Chemical Solution, Ammonia (as Nitrogen) Standard, 1000 ppm, (1mL = 1mg N, 1mL = 1.22mg NH_), LabChem, Traceable to NIST