Pipeta de Pasteur

Pipetas de Pasteur, también llamadas tuberías PAP, tubos de fluido, que normalmente se hacen de polímero polietileno (PE), etc. están divididos por dos pajitas de PAP en esterilización de rayos gamma y desinfección. Tienen volumen y longitud diferentes, se caracterizan por tener una cápsula hueca en el cuerpo del tubo, puede facilitar la mezcla de reactivos disolventes y el cuerpo de la célula, etc. Cuerpo de tubo traslúcido, de color blanco brillante, paredes movidos, fáciles de controlar. Pueden ser utilizadas para el ambiente de nitrógeno líquido; suave mientras el manejo, flexible, acceso conveniente al seguimiento y al recipiente especial; pequeña succión garantiza la repetibilidad del volumen de las gotas; Tubo de fluido puede ser termosoldado, conveniente de llevar. Experimento de aplicación de células principal, ensayos clínicos, clonación, etc. Admisión de una cantidad pequeña de líquido, transferencia o transportación, etc. Pipetas están ampliamente utilizadas en la genética, la medicina, la prevención de las epidemias, en campos clínicos, genéticos, bioquímicos, petroquímicas, militares y otros campos, pertenecen a los productos de laboratorio consumibles desechables.
Pipetas de Pasteur, también conocidas como goteros o cuentagotas, se utilizan para transferir pequeñas cantidades de líquidos. [1] son por lo general tubos de vidrio cónicos a un punto estrecho, y equipados con una bombilla de goma en la parte superior. La combinación de la pipeta de Pasteur y la bombilla de goma también se ha denominado pipeta con tetina. Las pipetas de Pasteur pueden ser de longitud diferente y se venden en cajas de cientos. [cita es necesaria] Pipetas llevan el nombre del científico francés Louis Pasteur, quien era conocido por haber usado una variante de pipetas extensivamente durante su investigación. Generalmente, se consideran suficientemente baratas para ser desechables, sin embargo, mientras el punto de vidrio no esté astillado, la pipeta de Pasteur puede lavarse y reutilizarse indefinidamente.
El nombre cuentagotas también puede referirse a los primeros modelos de plumas estilográficas, que se rellenan como algunos tipos de pipeta de Pasteur.

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Products information
Part No	Volume(ml)	Length	Material
PP01145	3	145	LDPE
PP02150	2	150	LDPE
PP03160	1	160	LDPE
PP2100	0.2	100	LDPE
PP5120	0.5	120	LDPE

Pasteur pipette also called pap pipe, fluid pipe, often use transparent polymer polyethylene (PE), etc.Divided into gamma ray sterilization and disinfection two pap straws.They have different volume and length，Its characteristic is a hollow capsule on the tube body, can facilitate mixed solvent reagents and cell body, etc.Translucent tube body, bright white, wall liquid ideal, easy to control;Can be used for the liquid nitrogen environment;Play fine soft, flexible, convenient access to trace or special container;Small suction can assure the repeatability of drop volume;Fluid pipe can be heat sealing, convenient to carry.Main application cell experiment, clinical trials, cloning, etc. The drawing of a small amount of liquid, transfer or carry operation, etc.Widely used in genetic, medicine, epidemic prevention, clinical, genetic, biochemical, petrochemical, military and other fields, belong to the lab consumable disposable products.

Pasteur pipettes, also known as droppers or eye droppers, are used to transfer small quantities of liquids.[1] They are usually glass tubes tapered to a narrow point, and fitted with a rubber bulb at the top. The combination of the Pasteur pipette and rubber bulb has also been referred to as a teat pipette. Pasteur pipettes come in various lengths and are sold in boxes of hundreds.[citation needed] They are named after the French scientist Louis Pasteur, who was known to have 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 Pasteur pipette may be washed and reused indefinitely.
The name eye dropper also may refer to early models of fountain-pens, which have to be refilled with some kind of Pasteur pipette.

Plastic Pasteur pipettes
Plastic Pasteur pipettes, also referred to as transfer pipettes, have their stems and bulbs in the form of a single piece made of plastic. There are different sizes. The volumes are usually marked on the stem, though the markings are rather crude and are not particularly accurate.
Plastic Pasteur pipettes are often used in biology where most media are aqueous, and solvent resistance is not important. Most organic solvents, such as hexane and acetone, cannot be used in plastic Pasteur pipettes. They dissolve the plastic in these instruments, rendering them inadequate for many types of applications. The pipettes are also hard to wash, and are usually discarded with other biohazard waste after each use.
Plastic bulb pipettes are generally not precise enough to be used for exact measurements, whereas their glass counterparts can be extremely precise. The longer and thinner the tip of a glass pipette, the more exact the measurement. Usually they will be used in conjunction with a scale.

Microscale use
2 glass Pasteur pipettes with rubber bulbs
The constriction toward the tip of the Pasteur pipettes may be plugged with a bit of tissue paper or cotton wool to filter off solids from small amounts of liquids. The use of celite is optional. The bulb can be attached and squeezed to help viscous solutions filter more rapidly.
With a bit of skill, Pasteur pipettes may also be used for microscale column chromatography. With appropriately fine silica gel, the bulb may be squeezed for microscale flash column chromatography.
Pasteur pipettes can also be used for microscale distillations. The liquid to be distilled is placed into a small reaction tube along with a boiling chip and heated to reflux one-half to two-thirds of the way up the inside of the tube. After squeezing the bulb to expel air, a pasteur pipette is inserted into the tube just below the level of the ring of refluxing liquid (into the vapor). The vapor is then drawn into the relatively cold pipette tip, causing it to condense and accumulate inside of the pipette.

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