Polyethylene Pipette
Polyethylene Pipette - Related Videos
06:35
Introduction to Serological Pipettes and Pipettors
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2023
The serological pipette is frequently used in the laboratory for transferring milliliter volumes of liquid, from less than 1 ml to up to 50 ml. The pipettes can be sterile, plastic, and disposable or sterilizable, glass and reusable. Both kinds of pipettes use a pipet-aid, for the aspiration and dispensation of liquids. Different sizes of pipettes can be used with the same pipet-aid for a variety of experimental assays. For example, serological pipettes are useful for mixing chemical solutions...
05:30
Making Patch-pipettes and Sharp Electrodes with a Programmable Puller
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Cited by 22 •
2008
This video shows how to use a programmable puller to make patch pipettes and sharp electrodes for electrophysiology. The same procedure can be used to make a variety of glass tools, including injection needles.
07:26
IgY Technology: Extraction of Chicken Antibodies from Egg Yolk by Polyethylene Glycol (PEG) Precipitation
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Cited by 169 •
2011
This protocol describes in particular the extraction of total IgY from egg yolk by means of polyethylene glycol precipitation and gives general information about IgY technology.
01:06
Convection-Enhanced Delivery of Polyethylene Glycol-Coated Charged Liposomes into a Rat Brain Tumor
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2025
The drug encapsulation enhances tumor cell specificity and reduces neurotoxicity.
05:12
Pressure-polishing Pipettes for Improved Patch-clamp Recording
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Cited by 13 •
2008
This is a guide to modifying the shape of glass micropipettes. Specifically, by using heat and air pressure the taper is widened without increasing the tip opening, leading to lower pipette resistance. This is critical to obtain low noise recordings of small cells but is useful in many applications.
FAQs
Liquid movement is controlled by changing pressure inside the flexible pipette. Squeezing a bulb or manipulating the pipette by hand creates the pressure needed to aspirate or dispense fluid through its narrow opening. Releasing or adjusting that applied force allows the operator to regulate transfer during laboratory handling, supporting controlled movement of small liquid amounts.
Polyethylene contributes flexibility and chemical resistance rather than relying on a rigid, breakable structure. Its elastic material can be manipulated during aspiration and dispensing, while its resistance supports use with common laboratory solutions. This combination is useful when handling liquids in workflows where a practical, low-breakage tool is preferred.
The narrow opening concentrates fluid movement at the tip, making aspiration, transfer, and dispensing more controlled than broad, unconfined pouring. In neuroscience workflows, this can help move physiological solutions, reagents, or biological samples between preparation steps while limiting handling to the small amounts needed for the experiment.
First, the operator applies pressure to draw liquid into the pipette, then moves the pipette to the intended vessel or preparation and applies pressure again to dispense it. The same hand or bulb manipulation controls both stages. This simple sequence supports transfer of solutions, reagents, and samples during routine laboratory workflows.
They are useful during tissue preparation, cell-handling procedures, and other experimental workflows that require movement of physiological solutions, reagents, or biological samples. Their flexibility can reduce concern about breakage during manipulation, while disposability and low cost support efficient handling across preparations. These features make them practical for repeated, small-volume transfers.
Using a disposable pipette for separate preparations can help reduce cross-contamination between samples or experimental materials. After a transfer, the tool can be discarded rather than reused, which simplifies handling and supports cleaner workflow separation. This is particularly relevant when neuroscience procedures involve multiple tissue preparations, cell samples, solutions, or reagents.