how do you calculate the accuracy of a pipette?
429073
Finally, calculate accuracy by using the equation A = 100 x Vavg/V0, where A is the accuracy of the pipette, Vavg is the average calculated volume and V0 is the theoretical volume you tried to dispense. If the accuracy value lies in the 99-101% range, the pipette is considered normal and calibrated.
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['look at the first non-zero digit if rounding to one significant figure.', 'look at the digit after the first non-zero digit if rounding to two significant figures.', 'draw a vertical line after the place value digit that is required.', 'look at the next digit.']
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['Step 1: Calculate the final pot size if you were to call. First, you need to figure out what the pot size would be if you called the bet. ... ', 'Step 2: Divide the size of the call by the size of the final pot. ... ', 'Step 3: Multiply by 100 to get the percentage.']
74999
['Fill a beaker or graduated cylinder with enough water to completely immerse the sphere in.', 'Record the baseline initial measurement.', 'Drop the sphere in.', 'Record final measurement.', 'Subtract the initial volume from the final volume ~ this is the volume of the sphere!']
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['Calculate the mean or average of each data set. ... ', 'Subtract the deviance of each piece of data by subtracting the mean from each number. ... ', 'Square each of the deviations.', 'Add up all of the squared deviations.', 'Divide this number by one less than the number of items in the data set.']
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To calculate precision using a range of values, start by sorting the data in numerical order so you can determine the highest and lowest measured values. Next, subtract the lowest measured value from the highest measured value, then report that answer as the precision.
1414685
Pipe Weight Calculator. This pipe weight calculation formula can be used to determine the weight per foot for any size of pipe with any wall thickness: Wt/Ft = 10.69*(OD - Wall Thickness)*Wall Thickness.
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Reading Pie Charts To calculate the percentage each slice is worth, measure the angle of each slice and divide this by 360 then multiply it by 100. To find the number of pieces of data each slice represents, multiply the percentage that each slice is worth by the total number of the data sets.
103010
First, a graduated pipette is a glass instrument used to transfer different measured amounts of liquid material from one container into another. While a volumetric pipette is a glass instrument used to transfer a specific measured amount of liquid material from one container to another.
152684
They are inaccurate because of the large meniscus. Graduated Cylinders: A graduated cylinder is a quick and easy (though less accurate) way to measure the volume of a liquid. ... Volumetric pipets are so accurate because the long neck decreases the error in measuring volume of the meniscus.
1323921
['50(. 15) = 7.5.', '76(. 20) = 15.2.', '80(. 20) = 16.', '98(. 45) = 44.1.']
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The formula for the volume of cylinder is: cylinder volume = π * radius² * height . For a pipe use its length instead of height: pipe volume = π * radius² * length , where radius = inner diameter/2 . The volume of a pipe is equal to the volume of a liquid inside (if a pipe is fully filled with it).
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['Measurement at 68% confidence level = (15.29 ± 1 * 0.03) seconds.', 'Measurement at 68% confidence level = (15.29 ± 0.03) seconds.']
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['First make sure the both weights have the same units.', 'Take your experimental yield and divide it by the theoretical yield.', 'Multiply this value by 100 to find the percent yield.']
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If the data is not given on the pie chart you can still calculate the percentage each slice is worth or how many items of data are in each slice (if given the total amount of data). To calculate the percentage each slice is worth, measure the angle of each slice and divide this by 360 then multiply it by 100.
447656
To calculate percentage error, use the formula: [(exact value - approximate value)/exact value] x 100. First, subtract the approximate value from the exact value. Then, divide that number by the exact value.
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Volumetric pipets are so accurate because the long neck decreases the error in measuring volume of the meniscus. They are only designed to measure one specific volume and commonly come in sizes 5 mL, 10 mL, 25 mL, and 50 mL. ... The pipet is read by placing the bottom of the meniscus on the measuring line.