A micropipette is very fine pipette for measuring, transferring, or injecting very small quantities of liquid whereas a olumetric pipettes are tools for measuring precise volumes of a liquid. Pipettes are typically long tubes, open on both ends, marked to contain (or deliver) a certain volume of liquid.
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Micropipettes are used for accurately measuring and transferring small volumes of liquid, typically in the microliter range. Volumetric pipettes, on the other hand, are used for accurately measuring and transferring a single specific volume of liquid, typically in the milliliter range. Micropipettes are more commonly used in biological and chemical laboratories for precise measurements, while volumetric pipettes are commonly used in analytical chemistry for preparing solutions of known concentration.
Erlenmeyer flasks have a conical shape with a narrow neck, used for mixing, heating, and storing liquids. Volumetric flasks have a flat bottom with a long neck and a specific volume graduation mark, used for making precise volume measurements and preparing solutions.
The absolute error of a volumetric flask is a measure of the maximum possible difference between the indicated volume and the actual volume the flask can hold. It is typically expressed as a range, such as ±0.03 ml, indicating that the volume of liquid measured using the flask could be off by up to 0.03 ml in either direction.
To calibrate a volumetric flask, you need to fill it with a known volume of liquid, usually water, at a specific temperature. Then, you measure the actual volume of liquid in the flask using a calibrated measuring device, such as a graduated cylinder or a pipette. The difference between the known volume and the measured volume is the calibration error, which can be used to adjust the accuracy of the flask.
Coductometric titration: is based on the suddenly change of the conductivity at the equivalence point.Volumetric titration: the volume of a standardized titrant is measured at the eqivalence point.
Conductometric titrations measure the change in electrical conductivity during a titration, while volumetric titrations measure the volume of titrant needed to reach the equivalence point. Conductometric titrations are more sensitive to small changes in concentration, while volumetric titrations are more straightforward to perform and interpret.