In the laboratory, a pipette can be used to transfer liquid. This is a measuring tool used to accurately transfer small or trace amounts of liquid in the laboratory. It is widely used in biology, chemistry, clinical diagnosis and other fields, and is one of the indispensable basic tools in the laboratory. The following is a detailed introduction to the pipette:
Basic structure
The pipette is mainly composed of a display window, a volume adjustment component, a piston, an O-ring, a suction tube and a pipette tip (pipet nozzle).
Working principle
The working principle of the pipette is mainly based on the physical principle of air displacement or positive displacement (no air pad). The air displacement pipette presses the button with the finger to move the piston to displace the air to complete the pipetting operation. The positive displacement pipette directly contacts the liquid through the piston to achieve the absorption and discharge of the liquid.
1. Raw material selection
Choose high-quality materials, such as corrosion-resistant and high-temperature resistant borosilicate glass tubes. This will not affect the chemical properties of the liquid. For parts that come into contact with the liquid, such as pistons and pipette tips, special materials such as polytetrafluoroethylene or high-purity silicone may be required.
2. Parts Manufacturing
Injection Molding: Use an injection molding machine to heat and melt plastic particles and inject them into the mold. After cooling, various plastic parts are formed.
Machining: Use Glass Transfer Pipette Machine to perform head forming and Tip Drawing on the glass tube
Assembly: Assemble the various parts together according to the design requirements to form a complete pipette.
3.Quality Control
Inspection: Strict quality inspection of each component and finished product, including size inspection, performance test, air tightness test, etc.
Calibration: Calibrate the capacity of the pipette to ensure that its accuracy and repeatability meet international standards.
4.Packaging
Clean and disinfect the qualified pipette, and then package it in dust-proof and moisture-proof packaging materials.
The above is an introduction to the glass Transfer pipette. If you are interested in the production of this product(glass transfer pipette machine), please consult the relevant equipment
