| Repeatability | Linearity |
 |
 |
| Repeatability of 4NH3-500L: Max STDEV/AVG 4% | 4NH3-500L's linearity coefficient-R^2 is 0.9997，Accuracy is under 3% |
| Temperature Performance | Humility Performance |
 |
 |
| 4NH3-500L shows good temperature performance. | 4NH3-500L shows good humility performance. |
| Long Term Drift | Test with 50ppm NH3 for 4 minutes every day, record the sensitivity performance. |
 |
 |
| Traditional NH3 sensor | Long life NH3 sensor |
