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Sagot :
C has a low range that doesn’t even reach what you want, and nor does D. A and B both have 9 microliters within their size range, but you want the micropipette closest in size to what you actually want, so A is the best choice.
A pipette of range 1.0-10uL is the most appropriate for taking a volume of 9 uL. So the correct option is A
What are micropipettes?
In the lab, micropipettes are used to transfer tiny amounts of liquid, typically less than 0.1 uL. In addition to other labs, they are most frequently employed in chemistry, biology, forensics, pharmaceutical, and drug development. There are various sizes of micropipettes commonly used in the laboratory.
Micropipettes vary in size and volume dispensed, and based on those two factors, they also need various pipette tips. Micropipettes aspirate liquid using a disposable pipette tip; take note that only the tip of the pipette comes into touch with the solution. For each sample, a fresh tip is used to avoid cross-contamination.
The quality of a pipette tip is the most important factor to consider. Whether one is searching for a filter, low retention, or gel loading tip, it should be made sure that the pipette tip will function as accurately and precisely as the micropipette. The purity of your pipette tips should be checked.
Therefore the correct option is A.
Read more about micropipettes, here
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