Micro Pipette Percentage Error
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Micropipette Accuracy And Precision
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What Common Error In Handling A Micropipette
Singapore Taiwan Hong Kong Spain Thailand UK & Ireland Vietnam Espanol About About Answers Community Guidelines Leaderboard Knowledge Partners Points & Levels Blog Safety Tips Science & Mathematics Biology Next Does anyone know micropipette uncertainty the percentage error of a micropipette? I need to know the percentage error of a micropipette which i believe to be 1-5ml volume. If anyone can help me that would be great. Follow 1 answer 1 Report Abuse Are you sure you want to delete this answer? Yes No Sorry, something has gone wrong. Trending Now Olympics News LeBron James Jessica Alba Cameron Mathison Car Insurance iPhone 7 micropipette error range Plus Alaska Airlines Garage Door Repair Aly Raisman Doctor Strange Answers Best Answer: The best way to determine that is by pipetting water and weighing it. So first take a weighing boat or tube and use that to put the scale at "zero". Then put your pipet at the maximum volume (5 ml) and pipet 10 times water into that weighing boat/tube. Now weigh the tube. It should contain 10x 5ml = 50 ml of water = 50 grams. But it might be slightly more or less. That will determine the error of the pipette. Usually the same procedure is repeated for a lower volume (1 ml in your case). Just pipet 10 times 1 ml and determine the weight. Typically, micropipettes will have an error between 1 % (very good) to 10 % (questionable; needs repair). Good luck! Source(s): BioLiz · 8 years ago 0 Thumbs up 0 Thumbs down Comment Add a comment Submit · just now Report Abuse Add your answer Does anyone know the percentage error of a micropipette? I need to know the percentage error of a micropipette which i believe to be 1-5ml volume. If anyone can help me that would be great. Add
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Common Micropipette Errors
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Uncertainty Of 1000 Microliter Micropipette
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in Molecular Biology laboratory. 4. To learn how to take care of Micropipettes. Introduction: Micropipettes used to accurately measure small volumes of liquids http://researchlabforbiotechbiochem.blogspot.com/2011/08/calibration-of-micropipettes.html (volumes typically vary from 1 to 1000 µL). The parts of typical micropipettes are shown below. Accuracy and Precision Pipettes and micropipettes can deliver accurate and precise volumes of solution. Our goal is to determine how accurate and how precise our pipette and micropipette are. Accuracy is a measure of how close a measured value is to the accepted or "true" value. It is related error in to the percent error between the average volume of solution measured experimentally and the volume that was expected (the accepted value). Smaller percent error reflects higher accuracy. Percent error can be negative, indicating that the measured volume was smaller than the expected volume or positive, indicating that the measured volume was larger than the expected volume. For example, we are attempting to measure two different micro pipette percentage volumes of water with our micropipette and two with our graduated pipette. Perfect accuracy would have us measure the exact volume we desire each time. However, the volume of water that we actually measure will be close but probably different from these volumes. The farther away from the correct volume, the lower the accuracy of our pipettes and/or our technique will be. The formula for percent error is in the Statistical Functions portion of the Lab Manual Introduction. Precision measures the closeness of a set of values obtained from identical measurements of the same quantity. It is the ability to repetitively measure the same volume of solution (whether it's accurate or not). Precision is related to the standard deviation of a series of measurements of the same thing. For example, if the micropipette is set to the same volume (300 µL) and four measurements are taken at this volume, a standard deviation can be taken of these five measurements. The smaller the standard deviation, the more precise the micropipette is. We will use the standard deviation as a measure of the spread of potential errors in a given measurement. The formula for standard deviat