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Pipettes are the laboratory equipment used for handling liquid samples. Almost all the pipettes require pipette tips for performing their intended work. Naturally, choosing a right type of universal pipette tip is necessary.
Pipette tip made up of virgin polypropylene is the most common and environmental friendly one. The pipette tips are divided into several types based on their functions and properties.
1.The type for choosing pipette tip:
● Filter Tips
Pipetting creates aerosols that carry the risk of cross-contamination. The filter tips are fitted with a filter to avoid the formation of aerosols. This type of pipette has been helpful in PCR (polymerase chain reaction), handling RNA/DNA, radio-labeled, infectious, and volatile samples.
● Low-retention Tips
These tips withhold less liquid than generally used ones, which help preserve samples/reagents. These tips are good for viscous and highly concentrated samples. However, these pipette tips are very costly. These are ideal for electrophoresis, protein analysis, sequencing, or any tests that use viscous and concentrated liquids.
● Long Tips
Sometimes the reagents or samples have a minimal volume and are at the bottom of the container. It means putting not only the pipette tip but also the shaft of the pipette inside the container. This increases the risk of contamination, so using a pipette tip that is longer than usual ones is the best substitute.
● Short Tips
The extended tips become inconvenient when the samples are drawn or placed into small wells. So, using short tips with a multichannel pipette is the perfect fit. Likewise, pipetting with long tips can strain the hands and require wider bench space. So, switching to shorter tips in order to avoid these conditions is the best option.
● Wide Bore Tips
Sometimes the samples that a laboratory handles can be fragile and deteriorate while transferring from a narrow area of the standard tips. So, using tips with a wide orifice is the best option for handling samples involving cells or that are very dense.
2.Criteria for Choosing the Right Universal Pipette Tip：
The main criteria for choosing the right pipette tip is the experiment you conduct in your laboratory. Sterile filter tips are a must if you are attempting molecular tests in the laboratory. Along with the experiment, there are many more criteria to consider before buying the tips. They are as follows:
● Volumes of Liquid Handled
The volume of liquid samples or reagents varies widely in the laboratories. In the laboratory, it is best to have tips of various sizes and purposes.
● Pipette Used
If you are handling multiple samples in a limited time, you might use a multichannel pipette. Still, general laboratories use micropipettes, so buying the tips suitable for both types in bulk is more economical.
● Preferred Company
If you opt for pre-sterile tip, you need to look for a company that provides the sterilization certificate. Similarly, non-sterile tips are reusable if the company states it as autoclavable.
Your budget is the second main criterion for choosing a suitable pipette for your laboratory. The filter tips are costly as compared to general-purpose tips. So, if the budget is tight and you are not willing to perform any molecular tests, then buying just general-purpose tips is the best choice.
Cotaus is a professional universal pipette tip manufacturer and supplier, providing customers with various specifications of pipette tips. Each product meets the customer's quality requirements. Choose Cotaus is to choose accuracy and efficiency.