What Are Some Advantages And Disadvantages Of The Serial Dilution Agar Plate Te
According to the video on the proper aseptic techniques for use in a laboratory, one reason that aseptic technique is necessary is to protect oneself from contact with biohazards that exist within a lab setting. Additionally, it serves the purpose to protect samples from being contaminated. Aseptic technique is also extremely important for safeguarding others in the lab. Since bacteria are everywhere, including on all of the lab equipment, aseptic techniques allow us to avoid the spread of infection in the above ways. The concentration of bleach that is used to disinfect your work area is a 10% concentration of bleach.
Serial dilution of samples followed. Tively accurate, has some drawbacks. Representative results of spread-plate and track-dilution cfu enumeration. Ment of Science and Technology (to B.D.J.). Control will be an advantage of the. Advantages of 'Serial Dilutions' This section is not a recipe for your experiment. It explains some principles for designing dilutions that give optimal results. Once you understand these principles, you will be better able to design the dilutions you need for each specific case.
The bleach concentration serves as a disinfectant, which is an agent that is intended to kill or remove microorganisms, but it does not kill bacteria spores. It is not a method of sterilization because sterilization is the process used to remove all life forms, including bacteria spores. It is important to disinfect your work area before and after working.
Do not trust that the person before you took the time to follow disinfection procedure, so always be sure to be consistent just in case. The video demonstrates the need for the step of passing the mouth of the tube through the flame. This is in order to keep the tube free of contamination. The increased temperature at the mouth of the tube works to create a confection-oven-like current, which pushes the air out of the tube and eliminates the potential for airborne contaminants to get into the mouth of the tube. The presence of the Bunsen Burner in the lab area also serves to decrease the amount of airborne contamination, but this process ensures that anything that may still be present in the air does not enter the tube.
The correct way to successfully perform this procedure is to pass the tube over the flame at a 45-degree angle. A pure culture is a culture that only has one type of microorganism growing in it. As a result, if you only see one type of microorganism growing in the culture, then you know that you have used the aseptic technique correctly and have achieves a pure culture. However, if you see one or more microorganisms growing in the culture, then you have created a mixed culture, and somewhere along the way the aseptic technique was likely not performed correctly, allowing for some type of contamination of another microorganism. If this happens, you should perform the process over again using the aseptic technique until your results yield a pure culture. The serial dilution agar plate technique is when you dilute a sample several times to achieve several different dilutions.
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For example, if you are working with a urine sample that you need to test for the presence of microorganisms. This technique can have both some advantages and disadvantages.
Using the same example, since you don't know the concentration of the microorganisms in the urine, then you don't know which dilution you need to make in order to make a countable solution. If you perform a 10% dilution, for example, then it might end up being too concentrated (and you will have too many microorganisms to count). On the other hand, if you perform a 0.1% dilution, the microorganisms might be too diluted, and you won't end up having enough to count.
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