Specifications
| Test item | Low concentration COD, high concentration COD |
| Measuring method of low concentration COD | Potassium dichromate method |
| Low concentration COD Measurement range | (0.000-150.0)mg/L |
| Low concentration COD error | ±8％ |
| Repeatability of low concentration COD | ≤3% |
| Low concentration COD Stability | <6mg/L(20min) |
| Low concentration COD wavelength | 470nm |
| Low concentration COD digestion | Need to be digested |
| Measuring method of high concentration COD | Potassium dichromate method |
| Measurement range of high concentration COD | (150.0-1500) mg/L, can be expanded to 15000mg/L |
| High concentration COD error | ±8％ |
| High concentration COD Repeatability | ≤3% |
| High concentration COD Stability | <6mg/L(20min) |
| High concentration COD wavelength | 620nm |
| High concentration COD needs to be digested | Need to be digested |
| Absorption Measurement range | （0.000～2.000）Abs |
| Absorption error of indication | +/- 0.01 or +/- 5% |
| Absorption Repeatability | ≤ 0.005 or 2% |
| Absorption Measurement range | （0.000～2.000）Abs |
| Wavelength measurement wavelength | 420nm、620nm |
| Wavelength Precision | ±4nm |
| Transmittance error of indication | ±2% |
| Transmittance Repeatability | ≤ 0.5％ |
| data storage | A total of 2000 test results |
| Measurement cell | 10Mm Colorimetric dish, 16mm Colorimetric tube |
| Power Supply | Power adapter, input AC: (100~240) V, output DC24V |
| Dimensions (mm); Weight (kg) | 302×205×122，1.33 |
Packing list
After-sales instructions
None
[Note] For after-sales services outside the Chinese mainland, if the instrument requires repair, the shipping and possible associated taxes shall be borne by the sender. Generation address of the manual: http://en.nbchao.com/p/30363/Specification.html , which is only used by users who purchase commodities from the NBCHAO.