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Instrument Description
HH-6 chemical oxygen analyzer is the best practical technology NEPA measured COD value instruments sealed catalytic digestion , in strongly acidic solution, adding a certain amount of potassium dichromate as oxidant in the presence of a catalyst in a private complex at 165 ℃temperature heating water sample digestion , potassium dichromate is reduced to trivalent chromium organic compounds in water , trivalent chromium ion content was measured at a specific wavelength to calculate the amount of oxygen consumed .
Main features
1. Automatic temperature control , timing ; cold light , narrow-band interference ;
2. Automatic data processing ; auto-zero ;
3. The display rich content ; man-machine dialogue , simple operation ;
4. Power protection ; five regression curve called at any time ;
5. Print a variety of data ; temperature , time adjustable
Technical parameters
| 1. Temperature control system : 165 ℃ ± 1.5 ℃; digestion time : 10min 2. Anti- chlorine interference : Cl- <1200 mg / L; detection limit : 5 mg / L 3. Measuring range : 5 mg / L ~ 2000 mg / L; Batch capacity: 20 water samples 4. Allow the error : 5 mg / L ~ 100 mg / L; absolute error ≤ ± 5 mg / L; 100 mg / L ~ 2000 mg / L, the relative error ≤ ± 5% 5. Repeatability error: the relative standard deviation ≤ ± 3%; optical stability : A≤0.002 / 20min |
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