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A volumetric pipette, bulb pipette, or belly pipette [1] allows extremely accurate measurement (to four significant figures) of the volume of a solution. [2] It is calibrated to deliver accurately a fixed volume of liquid. These pipettes have a large bulb with a long narrow portion above with a single graduation mark as it is calibrated for a ...
The delivery time is described as the duration of time that the meniscus reaches the end of the tip starting from the topmost volume, which is specified as 5 seconds for Class AS bulb and graduated-pipette volumetric equipment. [4] TD/EX pipettes are the most common type. [8] Another type is identified as TC ("to contain"), or IN, which means ...
Volumetric pipettes or bulb pipette allow the user to measure a volume of solution extremely precisely (precision of four significant figures). These pipettes have a large bulb with a long narrow portion above with a single graduation mark as it is calibrated for a single volume (like a volumetric flask). Typical volumes are 20, 50, and 100 mL.
Graduated cylinders are generally more accurate and precise than laboratory flasks and beakers, but they should not be used to perform volumetric analysis; [3] volumetric glassware, such as a volumetric flask or volumetric pipette, should be used, as it is even more accurate and precise. Graduated cylinders are sometimes used to measure the ...
This page was last edited on 24 March 2011, at 06:59 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Pages in category "Volumetric instruments" ... Volumetric flask; Volumetric pipette This page was last edited on 13 September 2019, at 19:45 (UTC) ...
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The burette tube carries graduated marks from which the dispensed volume of the liquid can be determined. [5] Compared to a volumetric pipette, a burette has similar precision if used to its full capacity, but as it is usually used to deliver less than its full capacity, a burette is slightly less precise than a pipette. [6]
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