Beral pipets are polyethylene disposable droppers that are available in seven assorted types for specific uses. The pipets are easily rinsed and reused, and the stem can be easily labeled for sample identification.

What is a disposable pipet?

Transfer pipets are disposable plastic pipets used to transfer small volumes of liquids. They consist of a long, slender tube and a molded bulb which can be gently compressed and relaxed to remove or dispense a desired liquid.

What is a barrel pipette?

A Beral (disposable) pipette is typically made of plastic and is used for non-quantitative transfer of solutions (filling a cuvette for example). Sometimes these do have graduations in the stem, but generally should never be used when precise volume recordings are needed.

What is the plastic pipette called?

Plastic Pasteur pipettes, also referred to as transfer pipettes, have their stems and bulbs in the form of a single piece of moulded plastic.

How accurate are transfer pipettes?

While transfer pipettes are not intended to be as accurate as their piston driven cousins, a certain level of accuracy and reproducibility is required and can be useful in comparing between brands. Accuracy is commonly defined as the variance between what was intended to be dispensed and what was actually dispensed.

What are transfer pipettes made of?

Samco transfer pipettes are made of shatterproof, nontoxic polyethylene. Their low-affinity surface reduces loss of cells and valuable proteins due to binding. They can be frozen in liquid nitrogen, or heat sealed for storage.

What is forward and reverse pipetting?

Forward pipetting is the standard technique for most aqueous solutions. Reverse pipetting is recommended for viscous or foaming liquids as well as very small volumes. The blow-out volume is additionally aspirated in the first step and stays in the pipette tip to be discarded.

How much can a P10 pipette?

P10: Maximum volume 10 µl. Accurate between 1 µl and 10 µl. Numbers on the micropipette (typically black-black-red) are read as XX.

What are the large pipettes called?

Jumbo Pastettes (Pasteur or plastic pipettes)

Why is it called pasteur pipette?

The Pasteur pipette name is from the French scientist Louis Pasteur, who used a variant of them extensively during his research. Generally, they are considered cheap enough to be disposable, however, so long as the glass point is not chipped, the eye dropper may be washed and reused indefinitely.

What is a pipet bulb?

Flexible, variable-capacity bulbs that are squeezed to create a vacuum or apply pressure to the liquid contents of pipets to collect, transfer, and dispense liquids; available in various styles and materials.

Is it pipette or pipet?

Pipette and pipet describe completely different liquid handling devices—for example, pipette is used for the device that you use pipette tips with, whereas a pipet describes the glass (or plastic) tubes used for serology (serological pipet) and chemistry (volumetric pipet).

Why do we use a glass pipette?

Graduated glass pipettes can be used as an easy and cost effective way of transferring small volumes of liquid. When used together which a pipettte bulb or pipette pump, users can draw up liquid into the pipette, and then when required, accurately dose the liquid out by releasing the bulb or pump.

What is glass pipette?

Pasteur pipettes are plastic or glass pipettes used to transfer small amounts of liquids, but are not graduated or calibrated for any particular volume. The bulb is separate from the pipette body. Pasteur pipettes are also called teat pipettes, droppers, eye droppers and chemical droppers.