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What is the duration in days for BOD test for water analysis at 20 degree c?

It is usually of five days but it may either be 3 days depending upon the the BOD test.


What are the differences between seeded and unseeded BOD?

When diluted water is added in surface wastewater to take immediate BOD is called unseeded and after 5 days of period wastewater received saturated oxygen from diluted water is called now seeded BOD.


How are DO and BOD content measured?

Dissolved oxygen is measured by the Winkler titration method.BOD5 is measured by putting a known volume of bacteria in a sample of the fluid to be insppected at the saturation point of oxygen, keeping it at a specified temperature for 5 fays then measuring the oxygen content.Both procedures are found in the "Standard Methods for the Examination of Water and Wastewater"


Why you use blank for the BOD test?

In the BOD (Biochemical Oxygen Demand) test, a blank is used to account for any oxygen demand exerted by materials other than the sample itself, such as the reagents and the dilution water. This ensures that the measured BOD reflects only the oxygen consumed by the biodegradable organic matter present in the sample. By subtracting the BOD of the blank from the sample's BOD, the results provide a more accurate assessment of the sample's organic pollution load.


How many days does it take to gain 5 pounds?

weight is measured by calories, not time.


What is biological oxygen demand?

It determines the amount of dissolved oxygen that is consumed by aerobic biological microorganisms in water. It is measured by the amount of oxygen that is consumed per liter of sample during 5 days of incubation it is in milligrams.


Why does chlorine increased the numbers of COD and BOD in the wastewater?

No, not increasing because it is not reducing oxygen.But it can alter the measured BOD and COD rather unpredictable possibly by decreasing BOD and in- or de-creasing COD


Why cod is greater than bod?

COD measures the amount of oxygen required to chemically oxidize (break down) organic and inorganic matter in a water sample, while BOD measures the amount of oxygen consumed by microorganisms during a biological process that breaks down organic matter. COD typically gives a higher value than BOD because it includes both the chemical and biological oxygen demand in the water sample.


What are the release dates for 5 Minute Work Out Anywhere - 2013 Brew Up a Hot Bod - 1.10?

5 Minute Work Out Anywhere - 2013 Brew Up a Hot Bod - 1.10 was released on: USA:8 July 2013


What is BOD in chemistry?

Its full form is biological oxygen demand.Answer:The 5 day Biological Oxygen Demand (BOD5) is a measure of how much biologically usable dissolved organic material is present in a water sample. The units used are mg/liter (mg/L). The material can be eaten up bu microbes which remove oxygen in thee water. If this happens the low oxygen levels in the water make it unusable and or hazardous to fish.BOD5 is measured by putting a sample of the contaminated water in a sealed container, oxygenating it, then adding a microbial culture. The level of oxygen is measured at the end of 5 days and the concentration of organics is calculated.Companion tests include Chemical Oxygen Demand (COD) and Total Organic Carbon (TOC)


What is BOD and COD of spent wash?

COD=100 What is Bod


When was Bod - series - created?

Bod - series - was created in 1975.