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Why pipette gives most accurate measurements than a beaker and a measuring cylinder?
Wiki User
∙ 14y ago
Because of surface tension, liquids dip inwards at the top. So in a graduated cylinder the dip has an effect on the measurement that the liquid is reaching. In a pipette, however, the tube which the liquid's in is much thinner, therefore the dip at the top is much less noticeable and has a considerably smaller difference. This, for obvious reason, makes it more accurate.
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Correction:
Generally for measurements, thin long columns are more accurate than relatively wider columns. Thus the meniscus of a sucked liquid is more noticeable in a pipette than in a graduated cylinder. This will aid good visibility when reading off the height of the liquid in the column. Thus the pipette is more accurate that the graduated cylinder.
Faith Olatokunbo, Fisk University.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoThe beaker is not graduated and it is just 'slapped on', the measuring cylinder is more accurate, but has not got a great deal of accuracy. A pipette can measure small volumes accurately as the volume is can hold has been checked in manufacture.
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What do you call the glass with measurements that is attached to a pipette?
The glass with measurements that is attached to a pipette is called a graduated cylinder.
Measuring 27 ml of liquids?
27 mL of liquid can be measured with a graduated cylinder, a burette or a pipette.
Why measuring cylinder is more precise than pipette?
Precision describes the repeatability of results, i.e. whether you get the same answer each time you measure something. Used correctly, there is no reason why a measuring cylinder would be the more precise. The exception is if you are using an inappropriate size of pipette, as it's difficult to be precise near the bottom of its range. Too large a measuring cylinder could also be imprecise.
Why is the Pipette is the most accurate laboratory apparatus used in measuring the volume of liquids?
Pipette is the most accurate apparatus because it is fixed apparatus and its answers can come in both either single graduated or multiple graduated. it has tap sort of thing at the end which makes it more accurate! thankyou -Fatima Bajwa
What tools are best when measuring liquids in a lab?
A graduated cylinder is appropriate for "normal" quantities. You may need a micro pipette for very small quantities.
Who among the following is the more accurate in measurement the pipette or the volumetric pipette?
Theoretically a graduated cylinder...but if the only graduate I've got holds five liters with graduations 100 ml apart and I'm trying to measure to the milliliter, the pipette would be more accurate.
What do you call the glass with measurements that is attached to a pipette?
The glass with measurements that is attached to a pipette is called a graduated cylinder.
What glassware provides the most accurate volume?
The glassware that provides the most accurate measurement of volume is the measuring cup. A glass measuring cup has lines on it to give an accurate reading.
Why is a volumetric pipette more accurate than a graduated pipette?
Graduated pipettes are not as accurate as volumetric pipettes, because each graduation line is not individually calibrated, and any imperfection in the internal diameter will have a greater effect on the volume delivered. In volumetric pipettes, the diameter of the pipette where the graduation mark is located is significantly smaller because the majority of its volume is located in the bulb.
What is the most accurate laboratory apparatus used in measuring the volume of liquid?
the pipette is the most accurate
Why is measuring pipette better than transfer pipette?
A measuring pipette is used to measure specific amounts of liquid. There are many different kinds but they help you accurately measure and transfer small amounts. A transfer pipette is essentially an eye-dropper, they typically do not have measurements on them.
Why is a volumetric pipette used for measuring out the hydroxylamine?
To get a very accurate volume of hydroxylamine.
What is more precise a pipette or graduated cylinder?
A pipette is more accurate. It can easily deliver one drop at a time.
What is better to use in measuring smaller volumes of liquids the graduated cylinder or the pipette?
The pipette, as it can be used to dispense microliters [liters * 10 to the power of -6] .
When measuring a small quanity of liquid which instrument would permit the most accurate reading?
Volumetric pipette.
Measuring 27 ml of liquids?
27 mL of liquid can be measured with a graduated cylinder, a burette or a pipette.
Why would a scientist use a graduated cylinder instead of beaker?
A Volumetric Pipette is the most accurate and used for titration calculations, if you include that as a type of pipette then it is FAR more accurate than a graduated cylinder. A beaker is very inaccurate so don't even go there.
