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Topic: Science
Number of pages / Number of words: 5 / 1185
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What is meant by BOD5? What is the incubation temperature? Should you agitate the sample before taking the initial DO reading? Why must you ensure there is a water seal during incubation? What is the formula used for calculating BOD if there is no dilution of the sample? Why might you need to dilute a sample and with what do you dilute it? With what instrument do you measure initial and final dissolved oxygen levels?

  • What organisms contribute to BOD of a water sample?
  • BOD is used as an indicator of organic matter pollution...

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What is meant by BOD5? What is the incubation temperature? Should you agitate the sample before taking the initial DO reading? Why must you ensure there is a water seal during incubation? What is the formula used for calculating BOD if there is no dilution of the sample? Why might you need to dilute a sample and with what do you dilute it? With what instrument do you measure initial and final dissolved oxygen levels?

  • What organisms contribute to BOD of a water sample?
  • BOD is used as an indicator of organic matter pollution...

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