Mouth Pipette
Mouth Pipette - Related Videos
01:26
Assessment of the Mouth
0 Views •
2025
A thorough mouth assessment, including inspection and palpation of the lips, gums, tongue, tonsils, uvula, and pharynx, is crucial in detecting potential health issues. Diseases ranging from oral cancer to systemic conditions like diabetes could be identified early through careful oral examination. This article provides a detailed guide on conducting a comprehensive mouth assessment. Mouth Inspection The inspection begins with visually examining the mouth for symmetry, color, and size.
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.
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.
05:16
Establishment of a Murine Pulp Exposure Model with a Novel Mouth-Gag for Pulpitis Research
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Cited by 2 •
2023
This article presents a streamlined protocol for establishing a pulpitis model in mice using an innovative mouth-gag, followed by subsequent histological analysis.
FAQs
Liquid movement depends on pressure inside the pipette. When the operator inhales through the tube, the resulting negative pressure draws liquid upward into the narrow passage. Releasing or adjusting that suction allows the liquid to be dispensed into another container. This pressure-based action explains both the technique’s manual nature and its direct connection to user exposure.
The mouth is directly connected to the pipette, so any liquid drawn too far into the tube can reach the operator. This creates a risk of accidental ingestion and can expose the user to toxic, infectious, or contaminated materials. The hazard is especially serious in biology and medical laboratories, where transferred samples may pose biological or chemical risks.
Mouth pipetting uses oral suction to create the pressure needed for liquid movement, whereas mechanical and electronic aids provide that pressure without connecting the sample to the operator’s mouth. This separation reduces the possibility of ingestion and exposure. Modern laboratory practice therefore replaces oral suction with these safer liquid-handling devices.
Modern laboratory practice prohibits mouth pipetting because the technique can expose users to toxic, infectious, or contaminated liquids and may cause accidental ingestion. The danger arises from using the operator’s mouth as part of the pressure system. Replacing that connection with a mechanical or electronic aid supports safer handling of biological and medical laboratory materials.
Laboratories should use mechanical or electronic pipette aids rather than oral suction. These devices provide the pressure needed to draw and dispense liquid while keeping the operator’s mouth separate from the pipette and its contents. Their use reflects current safety expectations and supports more reliable liquid-handling procedures in biology and medical laboratory work.
Its continued relevance is historical and safety-related rather than procedural. Studying the technique helps explain earlier liquid-transfer practices, clarifies why direct oral suction is hazardous, and shows how laboratory safeguards developed. In biology education and laboratory training, this context can reinforce the importance of using approved mechanical or electronic pipette aids.
The history of mouth pipetting illustrates how laboratory procedures can change when risks become clearer. A technique once used for transferring small liquid volumes was replaced because it connected the operator directly with potentially hazardous material. Its example helps place modern liquid-handling rules in context and highlights the relationship between laboratory methods, exposure prevention, and safe biological practice.