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Well, external calibration is a method used in analytical chemistry to determine the concentration of an unknown analyte. In essence, you take known concentrations of the analyte and plot it on an absorbance or transmittance graph to get a linear plot. And then you take that linear equation and plug in the absorbance or transmittance value received from the unknown solution and get the concentration. An example of this is if you want to find out the amount of calcium in a vitamin tablet. Dissolve the vitamin tablet and test the solution to get an absorbance value. Then test by the same method various concentrations of a calcium solution, plot this on a graph of absorbance vs. concentration and there yah go.

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Q: What is external calibration and is it the same as the manual calibration of equipment?
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Can the same calibration factor be used to determine the size of a microorganism under all objectives?

With each objective, the calibration must be recalibrated because the calibration only applies to its calabrated objective.


How do you calculate ppm on gas chromatograph?

The same way as you would with anything else. It is merely mg per liter.


What is the difference between valid and reliable results?

Reliable - . i remember this by using the 4 A's rule: search for accuracy, average and do the experiment again, discard AnomaliesValidity - i remember this with the 3 C's rule: Cross-check ( compare with internet experiments or a classmate) calibration of equipment( starting the timer at 0.00), and the control variable( what you keep the same)hope this helped :)


What are the objective of calibration?

Why calibrate? This is to ensure the veracity of our measurement. How sure are we that the measurement we obtain is true? For a 153.1mm our caliper gives us, how sure are we that it is really 153.1mm and not 153.9mm or 153mm? In order to really know it, we need another instrument of a higher accuracy (standard) and compare its reading with the instrument we have at hand. How far is the correction? By this, we will have an idea about the truthfulness of the measurement our instrument reads. In cases where our reading is far from the true value, we may have to adjust our reading by either adding or subtracting the correction value to the actual value.


How is the Celsius scale calibrated?

Generally thermometers are calibrated two ways . primary calibration or Secondary calibration. In secondary calibration , two thermometers are kept side by side under same conditions and identify the difference with respect to one thermometer. In primary calibration , thermometer that to be calibrated is placed in a ice cubes made of pure distilled water . Now pour some distilled water and stirr well . Now place thermometer inside that mixture This will give the Melting point temperature of pure water 0 degree centigrade. Now see the reading on thermometer and adjust reading. This way of calibrating a thermometer is accurate enough form most applications.

Related questions

Can the same calibration factor be used to determine the size of a microorganism under all objectives?

With each objective, the calibration must be recalibrated because the calibration only applies to its calabrated objective.


What is a scale calibration weight?

A scale calibration weight allows a person to check that a set of scales are reading the correct figures. This works by placing a calibration weight of which its exact weight is knows and checking that the scale reads the same weight. If not, then the scales will need to be calibrated.


Is there a difference between external auditory meatus and external acoustic meatus?

No, external auditory meatus and external acoustic meatus refer to the same structure, which is the ear canal that leads from the outer ear to the eardrum.


What is a calibrated scale?

A scale calibration weight allows a person to check that a set of scales are reading the correct figures. This works by placing a calibration weight of which its exact weight is knows and checking that the scale reads the same weight. If not, then the scales will need to be calibrated.


Is manual the same as automatic?

No manual means to doit your self


Is an exoskeleton the same thing as an external shell?

Yes, it is the same thing.


Stakeholder should be internal or external?

Generally, stakeholders are external. If an employee is at the same time a stakeholder of the company he works for, then he is both internal and external.


Is external reproduction the same as a life cycle?

no


Is copying your C Drive on to an external drive the same as copying it on to an external drive?

Of course it would. If you are copying your C Drive onto an external drive, then are copying it to an external drive, aren't you?


Is free lifting equipment just the same as that found in gyms?

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Why did the roman army have to wear the equipment?

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How are yaks the same as water buffalo?

they are the same in size but different in external characteristics