微量氮标样，符合ASTM D6366

Calibration Set for ASTM D6366 - Total Trace Nitrogen and its Derivatives in Liquid Aromatic Hydrocarbons by Oxidative Combustion and Electrochemical Detection.
Composition: N (from pyridine) in p-xylene. Offered only as a set of 6. Composition: 0.1, 0.5, 1.0, 2.5, 5.0, 10 ng/µL. Offered only as a set of 2mL ampoules.
Set also available in toluene upon request (with N for carbazole).