Why is A incorrect?
Don’t pipettes give accurate answer as well
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A is incorrect because it is a dropper✌️✌️✌️✌️
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Possible reasons:
- Probably because there are no markings/gradations given in the diagram
- As today’s electronic pipettes are complex, relying on a number of internal components for proper function, damage is often not visible to the eye or evident by the feel of the pipette action. This is called a silent pipette failure
- You can introduce contamination by “double dipping:” when you use the same tip to draw and dispense a unique sample and then immediately pipette another sample without changing the tip first. Contamination like this can be tricky to pinpoint if it is not caught right away, as it will affect results in other assays downstream
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