Brief Introduction of Pipette
The pipetting is a kind of pipette. It is often used for the removal of small or small amounts of liquid in the laboratory. The specifications are different. Different sizes of pipettes are used with different sizes of tips. The shapes produced by different manufacturers are also slightly different. However, the working principle and operation method are basically the same. Pipettes are precision instruments that must be handled and stored with care to prevent damage and avoid affecting their range.
The pipette provided by Hawach Scientific includes an electronic pipette and a mechanical pipette, and the mechanical pipette is divided into single-channel and multi-channel pipettes, adjustable and fixed pipettes. The mechanical pipette is of improved performance in Lightweight, low resistance seal, and lighter operation force. The head of the multi-channel pipette can rotate 360 degrees, which is convenient to move the liquid. Each nozzle even has a separate piston device, which is convenient for repair and maintenance. Nozzle ejectors can push out multiple suction nozzles at the same time, which is efficient and labor-saving.
Main classification of Pipette
The micropipette first appeared in 1956 and was invented by Schnitger, a scientist at the German Institute of Physiological Chemistry. Later, in 1958, the German company began producing button-type micropipettes, making it the world’s first production. Micro-pipette company. These micropipettes range from 1 to 1000 μl and are suitable for use in clinical routine chemical laboratories. The development of micro-pipette is not only more accurate but also a variety of varieties, such as micro-dispensers, multi-channel micro-pipettes, etc., the physics of the sample is the following two:
1 using air cushion (also known as piston stroke) loading;
2 Use a piston without an air cushion to positively displace the sample. The above two different principles of the micropipette have different specific application ranges.
2. Air pad loader
The piston stroke (air cushion) applicator is conveniently used for the loading of fixed or adjustable volume liquids with a loading volume ranging from less than 1 ul to 10 ml. The air cushion in the applicator separates the liquid sample sucked into the plastic tip from the piston in the applicator, and the air pad moves through the spring-like motion of the applicator piston, thereby driving the tip The liquid in the volume, the increased in the volume and the height of the pipetting tip determines the degree of expansion of the air cushion in the application. Therefore, the volume of piston movement must be about 2% to 4% of the volume that is desired to be drawn. The effects of temperature, air pressure, and air humidity must be reduced by structural improvements to the air pad applicator so that under normal conditions does not affect the accuracy of the sample. The disposable tip is an important part of the sample loading system. Its shape, material properties, and degree of fit with the pipette have a great influence on the accuracy of the sample.
3. Multi-channel pipette
The principle of the multichannel applicator is the same as above. Multichannel injectors are typically 8-channel or 12-channel pipettes, consistent with 8X12=96-well microplates. The use of a multi-channel applicator not only reduces the number of loading operations by the experimental operator but also improves the precision of the loading.
4. Electronics and distributors
The principle of the electronic applicator and the dispenser is the same as described above. The electronic pipette and dispenser are semi-automatic sample loading systems. The biggest advantage of the electronic pipette is its high sample repeatability and wide application range.
Performance of Pipette
Hawach pipettes are all passed the performance test and gained relative test certificates, there is no potential risk in their quality and operation. The upper and lower ends of the pipette can be detached and the lower end can be disinfected at high temperature and high pressure. Besides, it designs a safe lock with a capacity regulating knob, which can avoid the change of the volume in the liquid transfer process.
Compared with the mechanical pipette, the electronic pipette has an easier operation, and adjustable drainage speed and aspiration speed. Besides, electronic brake and piston control systems can ensure accurate liquid transfer results, and provide fast capacity setting and menu navigation.
Compared with the conventional pipettes, the Hawach Scientific pipette provides consistent high throughput performance, fast loading, ergonomic handling, and absolute precision. Designed for use with either hand, the carefully shaped finger hook enables you to reduce fatigue with options in auto-mix or auto-dispense.
The automatic settings make it easy to configure and run protocols. In the case of dispensing liquids across multiple channels, consistent volume and identical speed will follow. What’s more, work records, cycles, and status data are completely tamper-proof, with no worry about information leakage.
Diverse Specifications of Pipette
Hawach Scientific endeavors to produce a pipette with complete specifications and categories, which is not only available in a single channel, 8/12 channels adjustable/fixed pipette but also available in electronic pipette and mechanical pipettes. Matched accessories such as pipette stands and pipette tips are also for sale.
Novel materials are adopted in the production of pipettes, which makes the whole pipette can be sterilized at high temperatures and high pressure. A unique single–level structure brings great convenience to handlers. The safety lock with the capacity adjusting knob is designed to avoid the change of volume in the liquid-moving process.
Highlights of Pipette
The upper and lower ends of the pipette are detachable and easy to clean, and the slender lower end of the pipette is designed to accurately remove liquid. The multi-channel adjustable pipette includes eight-channel and twelve-channel. The cutting-edge rubber ring can effectively ensure good sealing performance.
Besides, a sandwich ceramic piston is better wear-resistant and corrosion-resistant. And suitable pipette stand and tip can be selected according to the purpose and size of the purchased pipette. Above properties make it suitable for various applications such as protein assays, molecular biology, biochemistry, and so on.
Improvements of Pipette
Pipette designed by Hawach is controlled by the onboard microprocessor, which ensures all piston movements within a set distance are at the set speed, regardless of human factors. The advanced stepper motor provides highly precise liquid measurement. Derives from improvements of the conventional pipette, Hawach pipette designs exceptionally easy multi-channel tip mounting, which brings absolutely consistent liquid removal across all channels.
Moreover, Hawach’ pipette simplifies the repeat dispensing process, only one needs to click the joystick once and repeat the dispensing process across a plate. Special modes streamline operation steps and enjoy faster throughput.