Specifications
| Measurement parameters | Water Hardness, Urea |
| Measuring method | Water Hardness: Calcium mg Reagent Method; Urea: Diacetyl-Oxime-Antipyrine Spectrophotometric method, spec-trophotometry |
| Light source wavelength | Water Hardness: 470nm: Urea: 470nm |
| Measurement range | Water Hardness: 0.000~500.0mg/L: Urea: 0.000~5.000mg/L |
| Error of indication | Water Hardness ： +/- 5 mg/L +/- 5% indication mg/L: urea: ≤ 1mg/L +/- 0.1mg/L; > 1mg/L +/- 5% |
| Repeatability | Water Hardness: ≤ 2.5% or 0.5% FS: Urea: ≤ 3% |
Packing list
After-sales instructions
Warranty days: 365 days
[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/30393/Specification.html , which is only used by users who purchase commodities from the NBCHAO.