What is the use of the pipette?
Pipette tips have a small, conical shape and fit on the end of the pipette. Scientists use pipette tips to transfer precise amounts of liquid from one container to another.
The pipette is an indispensable instrument in many experiments, and the number of accessory tips used in the experiment is also very large. At present, there are many manufacturers of pipette tips. How to choose the products suitable for us in the face of many brands and models of tip products?
Pipetting users usually have many considerations when purchasing pipettes, such as accuracy, brand of feel, tip adaptability, etc. However, when
choosing tips, the emphasis is far less than when buying pipettes. There are many people who spend a lot of money on imported pipettes, but save money on consumables. In fact, the quality of the tip will have a great influence on the pipetting accuracy.
Classification of pipette tips
Tips, as consumables used in conjunction with pipettes, generally can be divided into: standard tips, filter tips, and low adsorption tips according to different applications.
1. The standard pipette tip is a widely used pipette tip, and ordinary pipette tips can be used for pipetting operations, which are the most economical and economical pipette tips.
2. The filter tip is a consumable designed to avoid cross-contamination, and is often used in experiments such as molecular biology, cytology, and virology.
3. For experiments with high sensitivity requirements, or precious samples or reagents that are prone to residue, low adsorption tips can be selected to improve the recovery rate. The surface of the low adsorption tip has been treated with hydrophobic treatment, which can reduce the situation that the low surface tension liquid will leave more residue in the tip.
What pipette tips are on the market
Polypropylene Plastic Tips
At present, the suction heads on the market are basically made of polypropylene plastic (a colorless and transparent plastic with high chemical inertness and a wide temperature range).
Ordinary plastic pipette tips are not reusable and need to be replaced constantly, resulting in high cost.
Teflon plastic tip
Teflon plastic pipette tips mainly include PFA and FEP, both of which are transparent and can withstand strong acids and alkalis.
Characteristics of PFA/FEP Tips
1. High and low temperature resistance: the operating temperature can reach -200~260°C;
2. Has extraordinary chemical resistance, such as: aqua regia, hydrofluoric acid, nitric acid, hydrochloric acid, sulfuric acid, magic acid, acetone, alcohols, alkali solvents, etc.;
3. Meet the needs of various analytical laboratories for sample dilution in small quantities;
4. It is mainly used in laboratories such as ICP-MS, ICP-OES and other trace analysis and isotope analysis. It is used for a small amount of pipetting in some institutions such as geology, electronic chemicals, semiconductor analysis and testing, disease control centers, pharmaceutical factories, and environmental testing centers.
5. High measurement accuracy
6. Good hydrophobicity, can completely distribute liquid and prevent contamination
7. Conductivity, chemical resistance, good stability, etc.
Compatible with Eppendorf, Sartorius, Dalong and other pipette heads of various models.
