Product Overview:

The standard GB11914-89 specifies the steps for determining the chemical oxygen demand (COD) (cr) of water quality and strictly defines the methodCondition indicators such as heating and digestion time, solution acidity, and the amount of oxidant and catalyst used. It is obvious that the determination of COD (cr) in water quality is strictIf the conditions of the grid are violated, it will affect the accuracy of the measurement.

The standard COD (CR) analyzer follows the basic principles of the national standards (ISO) and (GB), ensuring a 2-hour digestion operation with reflux heating and micro boiling

The preparation and dosage of the reagent solution are consistent with the GB method * to ensure reliable and accurate analysis results.

This instrument uses microcomputer technology for timed control of heating electric furnaces, and can reflux 10 digestion bottles for 5, 6, and 8 IPGSDFTMTMO8010

Simultaneously heating. To achieve the goals of energy conservation, reducing power load, and improving efficiency.

The instrument adopts a glass burr reflux tube instead of a spherical reflux tube, and uses air cooling technology instead of tap water cooling, which can save water and standardize the instrumentTransform and make instrument use more reassuring.

The chemical solution preparation, operation, and COD calculation of the instrument shall comply with GB11914-89. COD water samples below 50mg/L can be diluted with titrantsTo improve accuracy with oxidants, COD water samples above 1000mg/L can be measured by diluting the water sample proportionally.

Technical specifications:

Measurement range: 0-1000mg/L, 0-10000mg/L (diluted water sample)

Measurement time: no more than 2 hours

Measurement error: Potassium hydrogen phthalate standard solution (500mg/L), relative standard deviation not exceeding 5.0% industrial

Organic wastewater (500mg/L), with a relative standard deviation not exceeding 8.0%

Environmental temperature: 5-40 ℃

Heating power: 1500W (AC 220V ± 22V, 50HZ)

Main features:

By using microcomputer technology for timed control of the heating electric furnace, the reflux device for 250mL conical bottles with 5, 6, 8, or 10 standard 24 grit grinding ports can be adjusted accordingly

Heating is carried out at the appropriate time. To achieve the goals of energy conservation, reducing power load, and improving efficiency.

Using glass burr reflux pipes instead of spherical reflux pipes and replacing tap water cooling with air cooling technology can not only save water but also standardize the instrument,

At the same time, it makes the use of the instrument more reassuring. The instrument can save thousands of yuan in water and electricity costs per year by taking samples for 2 hours per day.