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| Zonwon Automated Pipette |
Pipette meaning
Pipettes, pipettor or chemical dropper, also
known as "quantitative straw". Hong Kong and Taiwan often call it in
English name. Pipette is a laboratory equipment designed to measure the volume
of liquid and draw it to drip into other containers. Often used in biological
experiments or chemical experiments. Through a variety of designs to achieve
different accuracy and precision, including from a simple glass-made straw, to
the complex adjustable or electronically controlled straw. Many pipettes allow
the local container to form a local vacuum and absorb or discharge the liquid
by selectively adjusting the vacuum volume. The accuracy of the measurement
varies greatly depending on the type.
Pipette history
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Abstract: The first micro-pipette was invented by the German Hans Schmitz (1960). The founder of Eppendorf, HeinrichNetheler, inherited the patent and began commercial production of micro-pipettes in the sixties. The adjustable pipettes were invented by several people in the United States of America Wisconsin, including the inventor Warren Greenson and Henry Lardy, professor of biochemistry at the University of Wisconsin-Madison. Even if the various pipettes have their own specific descriptive appeals, in practice any type of pipette will be simple called pipette. Sometimes a 1 to 1000 microliter pipette is treated as a "micropipette", and for a larger volume it becomes a "macropipette"
Pipette species
Common pipettes
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| DP25 Pipette |
Exhausted micro-pipettes, often referred
to as "exhaust-type pipettes", are referred to as "pipetting
guns" and are an adjustable pipette for measuring between 0.1 and 1000
microliters. This pipette requires a disposable tip, in contact with the
liquid. The pipette is driven by a piston to discharge air, whereby the
vertically moving metal or ceramic piston creates a vacuum in a closed bobbin.
When the piston twists upwards, compresses the rear half of the gas, and the
first half of the space becomes a vacuum. At this point, the liquid near the
tip of the gun will enter the vacuum part, then can be transferred or
re-discharged. This pipette can be very accurate and precise. However, because
it relies on the movement of the gas, compression, its accuracy will be
affected by environmental conditions, especially the temperature and the user's
technology. Thus, the instrument must be properly stored and calibrated, and
the user must also be trained to practice the correct and stable operation
techniques.
Positive displacement pipettes
Positive displacement pipettes
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| D25 Pipette |
Volumetric pipettes
The volumetric pipette allows the user to
measure the volume of the solution with a very high precision (four significant
digits), which has a larger ball, which is connected to a narrow portion, which
is engraved with a tick , Only a volume (similar to the volumetric flask) is
identified. Typical models include 10,25,50 ml volumes. Volumetric pipettes are
often used to formulate solutions from the base material or to prepare the
titrant.
Scale pipette
Scale pipettes, also known as scale
pipettes, graduated pipettes, etc., are a large pipette that contains a tube
with a series of graduated lines, similar to a graduated cylinder or burette,
representing a different volume. It also needs to create a vacuum, in the early
chemical, biological experiments, the experimenter will mouth breathing. Scale
pipettes usually have 5,10,25,50 ml specifications.
In order to prevent the inhalation of
harmful substances, all kinds of manual or electronically controlled pipettes
were invented. Initially, the pipette was made of soda-lime glass. Today, many
pipettes are made of borosilicate glass. Disposable scale pipettes are usually
made of polystyrene.
Pasteur straw
A Pasteur pipette is a plastic or glass
pipette used to transfer a small amount of liquid, but not marked with any
volume of scale or line. Pasteur pipettes are more often called droppers,
chemical droppers.
Bottle Dispenser / Bottle Dispenser
Bottle Dispenser / Bottle Dispenser
Introduction: Bottle dispenser is
equivalent to the immobilization gun fixed on the reagent bottle, can be
adjusted by adjusting the amount of reagent once, especially for the
distribution of commonly used reagents to avoid repeated dumping trouble.
Bottle dispenser selection
1, the standard bottle distributor for
general acid and alkali and low concentrations of strong acid and alkali and
salts, such as: H3PO4, H2PO4, NaOH, kOH, and so on;
2, organic bottle mouth distributor for
organic and high concentrations of acid, salt. Such as: HCL, HNO3, TFA, THF and
so on;
3, hydrofluoric acid bottle distributor is
only suitable for HF
Coyp right by @Hangzhou Zhongwang Technology CO.,LTD
Coyp right by @Hangzhou Zhongwang Technology CO.,LTD
