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Brief introduction of COD:

COD (chemical oxygen demand) is a chemical method to measure the amount of reducing substances that need to be oxidized in water samples,

 which is one of the indicators for the implementation of total emission control in China. 

Chemical oxygen demand is gradually becoming a mandatory parameter for more and more industries, 

so the measurement of COD in water is very important. This series of products meet the HJ/T 399 industry standard,

 using the micro-reflux colorimetry, the water sample after 20 minutes of rapid digestion by spectrophotometer COD value determination up to 20 ~ 1500mg/L, 

20 minutes of digestion COD, COD reagent, COD prefabricated tube reagent, instead of HACH COD reagent. COD reagent, COD prefabricated pipe reagent,

 COD reagent instead of HACH is suitable for the determination of chemical oxygen demand (COD) in surface water, groundwater, municipal sewage and industrial wastewater.

Details:

COD concept

COD (chemical oxygen demand) is a chemical method to measure the amount of reducing substances that need to be oxidized in water samples,

 which is one of the indicators for the implementation of total emission control in China. 

Chemical oxygen demand is gradually becoming a mandatory parameter for more and more industries,

 so the measurement of COD in water is very important. This series of products comply with the HJ/T 399 industry standard, the use of micro-reflux colorimetry, 

the water sample after 20 minutes of rapid digestion by spectrophotometer determination of COD value can reach 20 ~ 1500mg/L, 20 minutes of COD digestion.

Advantages of COD prefabricated tube reagent

● Multi-range selection: range from 20 to 1500mg/l, users can choose according to different water samples.

● Reliable quality: strict internal production and product quality control.

● Users do not need to prepare their own reagents: save time, improve safety, make the operation easier.

● Time saving: Digestion time is only 20 minutes. The whole test process, including water sample digestion, colorimetry, determination and other steps, takes less than 1 hour.

● Reduce environmental impact: Microreflux method only requires a small amount of reagents, 

sealed reagent tube can prevent harmful substances from sputtering and improve the accuracy of measurement, 

but also ensure the safety of the digestion process, reduce the amount of reagents, but also reduce the secondary pollution to the environment.

● Simple, easy to learn, illustrated operation guide is convenient for users to master the COD analysis method in a relatively short time.

● Reduce the overall cost of the owner: the test results are fast and accurate, 

effectively help the owner to improve the efficiency of water treatment, and reduce the operating cost to a certain extent.

The advantages of COD prefabricated tube reagent assembly ceramic metering pump

● Stainless steel SUS316L material, acid corrosion resistance.

● Ceramic pump core adopts ceramic plunger structure, high measurement accuracy of sulfuric acid.

●COD reagent and pump contact parts are evenly made of anti-acidification chemical reaction material, which will not pollute the medium.

● Ceramic metering pump has long service life.