| Nucleus | Spin | Abundance | Receptivity (1H) | 400 Mercury (MHz) | 400 SGM (MHz) | 500 Varian (MHz) | 600 Varian (MHz) | Shift Range (ppm) |
| 14N | 1 | 99.632% | 0.00100 | — | 28.901 | 36.099 | 43.323 | 0 -> 900 |
| 15N | 1/2 | 0.368% | 0.00000384 | —.— | 40.548 | 50.647 | 60.782 | -950 -> 0 |
| Nucleus | Spin | Abundance | Receptivity (1H) | 400 Mercury (MHz) | 400 SGM (MHz) | 500 Varian (MHz) | 600 Varian (MHz) | Shift Range (ppm) |
| 14N | 1 | 99.632% | 0.00100 | — | 28.901 | 36.099 | 43.323 | 0 -> 900 |
| 15N | 1/2 | 0.368% | 0.00000384 | —.— | 40.548 | 50.647 | 60.782 | -950 -> 0 |