0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why does your mind go blank?
sometimes it goes blank when your under pressure like for instence when you have a test
How can you calculate BOD Mathmaticly?
The Biochemical Oxygen Demand (BOD) of a sample is the amount of dissolved oxygen required by aerobic microorganisms to breakdown organic matter in the sample.The test is simple:Measure the Dissolved Oxygen content of the sample (a)Place in a sealed darkened bottleIncubate for 5 days at 20'CMeasure the Dissolved Oxygen content of the incubated sample (b)Generally you're using this test to analyse contaminated water, so you'll want to dilute it first - it may be that aren't enough aerobic microorganisms present to give you a measurable result, in which case you'll need to inoculate the sample with a suitable culture.The BOD of the sample = a - bBOD is expressed in mg O2/L of sample.Extra CreditGenerally you're using this test to analyse contaminated water, so you'll want to dilute it first - it may be that aren't enough aerobic microorganisms present to give you a measurable result, in which case you'll need to inoculate the sample with a suitable culture.The BOD of a diluted innoculated sample = ((a - b) - BOD of inoculated culture) * dilution factor
What expressions do you use for 2 blank 5 blank 3 equals 17?
2 + 5 * 3 is one possible answer.
What is the difference between reagent blank and sample blank?
Reagent Blank : Take reagent and add deionised water (in place of sample to be tested). Now measure the OD at specific wavelength --> this OD is your reagent blank. Substract this OD from your test result (with sample) to avoid any false +ve effect due to colour of reagents itself.Sample Blank : Take sample and measure the OD without adding reagents --> this OD is your sample blank. Substract this OD from your test result to avoid any false +ve effect due to colour and turbidity of sample itself. As it is the fact that colour and turbidity of each sample would vary from one to another.So now it is clear that Reagent blank is used to avoid bias due to colour of reagents and Sample blank is used to avoid bias due to sample itself.
How many syllables does anybody have?
Four. An-y-bod-y
Factor may affect BOD test?
The factors that may affect BOD test include: 1. The temperature at which the test is performed. 2. The amount of seeding done
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.
Why cod is greater than bod?
Type your answer here... It's not. Typically, COD is greater than BOD. The COD test is used primarily as an operational control because it takes only a matter of hours, compared to 5 days for the BOD test.
What advantages and disadvantages of the COD test compared to the BOD test?
jamil jubo tahik letum
Graph use in a sentence?
The graph on my test was confusing, so I left it blank.
Blank Test?
asdfasdfadsfadsfasdfasdfasdasdf
What would one use the BOD POD for?
The BOD POD is a tool that is used to measure body composition. It utilizes air displacement technology. One uses the BOD POD by sitting in a chamber while the BOD POD measures the volume of air that a person's body displaces.
How to calculate BOD value in a sample?
if unseeded, BOD = (D1-D2)/Pif seeded, BOD = ((D1-D2)-(B1-B2)f)/PD1 = DO of diluted seeded wastewaterD2 = DO of wastewater after incubationB1 = DO of diluted seed sampleB2 = DO of seed sample after incubationf = ratio of seed volume in seeded wastewater test to seed volume in BOD test on seedP = decimal fraction of wastewater sample used. (vol. of wastewater)/(vol. of dilution water plus wastewater)Maybe that helps
What are the main sources of error in a BOD test?
1. dilution error 2.blame the test sample 3.poor maintenance of bottles(cleaning)
What rhymes with bod?
Ipod Use the related link below to help.
Why does your mind go blank?
sometimes it goes blank when your under pressure like for instence when you have a test
Role of nitrifying bacteria in BOD test?
Nitrifying bacteria play a crucial role in the BOD (Biochemical Oxygen Demand) test. They are responsible for oxidizing ammonia to nitrate in the presence of oxygen. This helps determine the amount of biodegradable organic matter in a sample, as the oxygen is consumed during this process. By measuring the decrease in dissolved oxygen, the BOD test provides an indication of the organic pollution level in water.
