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Why cod higher than bod?
A COD test measures all of the chemicals in a sample which can be oxidized. A BOD5 test measures the total amount of food (or organic carbons) that bacteria can oxidize (in 5 days).A COD test result (that can be performed in about 2 hours) can be correlated to an expected BOD5 result (which takes 5 days).by rislys
How can one test for protein in a sample?
One can test for protein in a sample by using a method called the Biuret test. This test involves adding a reagent to the sample, which causes a color change if protein is present. The intensity of the color change can indicate the amount of protein in the sample.
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
How can one effectively test for nitrates in water?
One can effectively test for nitrates in water by using a nitrate test kit, which typically involves collecting a water sample, adding reagents to the sample, and observing a color change to indicate the presence of nitrates.
How to test a seed?
how to test a seed for what?
How will you test the presence of protein in milk?
You can test the presence of protein in milk using the Biuret test. This test involves adding Biuret reagent to the milk sample, which reacts with proteins to give a purple color change. The intensity of the color change is proportional to the protein concentration in the milk sample.
What is ammonium molybdate test?
The ammonium molybdate test is a qualitative analytical test used to detect the presence of phosphate ions in a sample. It involves adding ammonium molybdate reagent to the sample, resulting in the formation of a yellow precipitate if phosphate ions are present. The intensity of the yellow color can provide an indication of the concentration of phosphate ions in the sample.
Why you use BOD5?
BOD tests the amount of oxygen that is used up in a sample due to organic matter (bacteria). The results tell us the quality of organic matter the sample. 5 days is the best time because after five days some of the bacteria changes and becomes nitrifying (feeds off nitrogen instead of oxygen). It's almost always used to test wastewater.
How can one effectively test for nitrate levels in water?
One can effectively test for nitrate levels in water by using a nitrate test kit, which typically involves collecting a water sample, adding reagents to the sample, and then comparing the color change to a color chart to determine the nitrate concentration.
How can one effectively test nitrate levels in water?
One can effectively test nitrate levels in water by using a nitrate test kit, which typically involves collecting a water sample, adding reagents to the sample, and then comparing the color change to a color chart to determine the nitrate concentration.
What is an Anthrone test?
The Anthrone test is a chemical test used to detect the presence of carbohydrates, specifically monosaccharides and disaccharides, in a sample. It involves adding Anthrone reagent to a sample, which produces a blue color in the presence of carbohydrates. The intensity of the blue color can be used to estimate the concentration of carbohydrates in the sample.
What is a chemical test for protein?
A common chemical test for proteins is the Biuret test. This test involves adding a solution of copper sulfate and sodium hydroxide to the protein sample, resulting in a color change from blue to purple if proteins are present. The intensity of the purple color can provide an estimate of the protein concentration in the sample.
