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Laboratory COD Analyzer COD-1C

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Laboratory COD Analyzer COD-1C
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Model
COD-1C
MOQ
1
Place of Origin
China
DeliveryTime
7-10 working days
Payment Ways
T/T, L/C, Paypal, Western Union, MoneyGram, AliPay
Sercice
OEM, ODM, Customized
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COD-1C LABORATORY 

COD ANALYZER

Chemical Oxygen Demand (COD or CODcr) refers to the amount of oxidant consumed caused by oxidation of reducing substances in water under specific condition, recorded as the amount of oxygen consumption counted by “mg/L”. It indicates the water pollution degree by these reducing substances, including organic matter, nitrite, ferrous salt and sulfide, etc. There is a small amount of inorganic reducing substances but a large amount of organic matters. So, COD can be used as a comprehensive index of relative content of organic matters.

 

Principle

COD: Sample is sealed and digested in strong acid solution with exclusive oxidant which contains potassium dichromate, and then under special composite catalyst, digestion temperature is 165℃, last for 15 min. Hexavalent chromium in Potassium dichromate is reduced to trivalent chromium by organic matter in water. The amounts of trivalent chromium are measured at 420nm and 610nm respectively, finally, base on the amounts of trivalent chromium, calculate the consumption of oxygen concentration.

TECHNICAL PARAMETERS

Product

COD-1C LABORATORY COD ANALYZER

Measuring range

5~2000mg/L (three ranges: CODL 5~200 mg/L, CODM 200~1000 mg/L and CODH 1000~2000 mg/L),(over range can be diluted)

Acurracy

COD:  5~100 mg/L, Absolute Error (AE)≤±8mg/L,100~2000mg/L;Relative Error (RE)≤±8%

Display

Read the value BOD5 from dividing rule of pressure gauge(mg/L)

Anti-Chlorine Interference

≤2000mg/L

Power Consumption

300W

Digestion Temp

165℃±1.5℃

Digestion time

15 min

Optical Systems (wavelength)

420 nm and 610 nm

Host dimension

240mm×206mm×170mm 

Digestion tank

240mm×107mm×170mm    

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