Product standard COD method is used Reflux titration, the method long digestion time (2 hours), energy consumption, high cost of reagents, low efficiency, often troubled by the actual operator. We focused on industrial pollution control sewage discharges and rapid detection of a variety of requirements, the successful development of YHCA-100A COD Rapid colorimetric detector. Instruments can be opened or closed reflux heating digestion digestion. Equipment using special catalyst and oxidant, water sample by adding specific oxidant and catalyst, heating digestion and oxidant in the Cr6 + part of the reduced Cr3 +, after reduction of the Cr3 + content by colorimetric assay, regression, conversion effluent samples COD (cr) the actual concentration. 
 Specifications Digestion time: 15 minutes 
 Sampling Method: Automatic pressure to take liquid, liquid discharge 
 Measuring range :0-100m / L 0-1000mg / L 
 Measurement error: 5 ~ 100 mg / L, absolute error ≤ ± 5 mg / L 
 100 mg / L ~ 1000 mg / L, the relative error ≤ ± 5% 
 Wavelength: 610nm center wavelength 
 Chloride interference: Cl-<5000mg / L 
 Optional HP Notebook