Characteristics and Application of KHCOD-8 COD Digestion Device

CODDissolving device, COD heating digestion device,CODStandard reflux apparatusCODReflux analyzer,CODAutomatic digestion reflux analyzer,Nanjing KehuanCODDigestion device, COD constant temperature digestion device
KHCOD-8typeCODDissolving device(CODStandard reflux apparatus)Mainly composed of the body, return pipe, fan, electric furnace cover, etc4Most of the components are controlled by microcomputer technology for timed heating of the electric furnace plate and fan, which can8Simultaneously heating the reflux device. Ceramic plate heating, better effect, bottle rack protection, safer
KHCOD-8typeCODDissolving device(CODStandard reflux apparatus)Using glass burr reflux pipes instead of spherical reflux pipes, and replacing tap water cooling with air cooling and water cooling technology. The cooling part is mainly completed by the burr condenser tube and dual fans, and the dual effect of the cooling water in the upper spherical reflux tube and the fan inside the machine ensures the reflux cooling of the sample.
KHCOD-8typeCODTechnical parameters of digestion device
Measurement range:5～800mg/L,800～10000mg/L (Diluted)
Sample quantity:8One (300ml straight bottle)

Measurement time: not exceeding2hour
Measurement error: Potassium hydrogen phthalate standard solution（500mg/L）The relative standard deviation is not greater than5%
Industrial organic wastewater（500mg/L）The relative standard deviation is not greater than8%
Environmental temperature:0～45℃

Accuracy:CODCompared with the classic reflux method, the result is the same
Heating power:1500WAverage power:600W

External dimensions:40*28*62(Excluding the height of the condenser tube)

The national GB 828-2017 standard analysis method standardizes the development of water quality chemical oxygen demand COD_（Cr）The measurement steps strictly specify the conditions and indicators of the method, such as heating and digestion time, solution acidity, oxidant and catalyst dosage. It is obvious that the water quality COD_（Cr）There are strict conditions for the measurement, and any operation that violates these conditions will affect the accuracy of the measurement.
COD_（Cr）The constant temperature heater follows the basic principles of international standards (ISO) and national standards (GB), ensuring the digestion operation of reflux heating and micro boiling for 2 hours. The preparation and addition of reagent solutions are consistent with the GB method, ensuring reliable and accurate analysis results.

CODDigestion device, KHCOD-8Z standardCOD digestion device