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The probable distinction between the reference electrode plus the pH electrode is utilized to find out the pH value of the water sample.
This method is similar towards the dichromate method but utilizes potassium permanganate in lieu of potassium dichromate. It's got the advantage of being able to differentiate involving biologically obtainable and inert organic and natural subject, but it is a lot less exact plus more time-consuming than the dichromate strategy.
HgSO4 are included to do away with the presence of chloride ions and silver salts to catalyze the reaction.
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Nền tảng cho thử nghiệm COD là gần như mọi hợp chất hữu cơ đều có thể bị oxy hóa đầy đủ để tạo ra dioxide cacbon bằng các chất oxy hóa mạnh trong các điều kiện axít.
Inside the presence of a robust oxidising agent in an acidic environment, nearly any natural component will oxidise to carbon dioxide, according to the COD testing strategy.
Chemical oxygen demand (COD) can be an indirect measurement of the level of natural and organic make a difference in a sample. When accomplishing a COD test, you'll be able to measure nearly all organic compounds that can be digested by a digestion reagent.
"Floor profile" refers back to the character in the floor of a material and supplies details about the differences in height, irregularities or even the roughness of a surface area. The floor profile has a substantial influence over the general performance of the coating. It influences adhesion, defense, coating thickness, and for that reason substance usage.
The vital stage is website usually that after you have established a mean COD:BOD ratio for the wastewater stream, then the fairly very simple and rapid COD test can be used to forecast BOD with relative dependability.
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Conductivity Measurement: Conductivity measurement is predicated on the flexibility of water to carry out electrical latest because of the presence of ions.
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