Pipette Tips

Pipette Tips

Tips for Precious Samples and Demanding Applications

Pipette tips are form-fitting disposable tips for pipettes, which are used in diverse research applications to accurately and consistently transfer small, precise amounts of liquid. To prevent cross-contamination, each step of a liquid-handling protocol typically starts with a new pipette tip. Pipette tips are made of polypropylene and are autoclavable and chemically stable. Rainin pipette tips are continuously quality-control tested to meet rigorous cleanliness and physical specifications.

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METTLER TOLEDO supports and services your pipettes through their entire life-cycle, from good pipetting techniques to preventive maintenance and calibration to equipment repair.

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FAQs

What are pipette tips?

Pipette tips are cone-shaped, hollow plastic objects that fit on the end of a pipette to cleanly aspirate (suck in) and dispense small volumes of liquid. Together with a pipette, pipette tips create an air-tight seal so scientists can transfer accurate volumes of liquid from one vessel to another. Commonly made from polypropylene, they are made for one-time use and are available in various formats and volumes to fit specific applications and pipettes.

Because they come in direct contact with the sample of interest, pipette tips can significantly affect the results of an experiment. Discarding pipette tips between each experimental step helps prevent cross-contamination.

Pipette Tips
what are pipette tips?

What is pipette tip sterility?

Pipette tip sterility refers to the absence of bacteria or any living microorganisms or spore, but without an additional qualifier (such as BioClean Ultra) can still contain contaminants that can have an influence on the outcome of an experiment. Reaction conditions and experimental results can be compromised by organic and non-organic contaminants unknowingly introduced to liquid samples by non-certified pipette tips. Contaminants can inflict adverse, unpredictable effects on enzyme activity and longevity, molecular interaction, spectrophotometric and chromatographic analysis, and more.

What is BioClean Ultra?

BioClean refers to the exceptionally high standard to which all Rainin air-displacement tips are tested and found to be free of detectable amounts of specific biological contaminants, such as DNA (human and bacterial), RNase, DNase, endotoxin, protein, protease, ATP and PCR inhibitors.

BioClean Ultra pipette tips are manufactured in a fully automated class 100,000 clean room facility. To assure absolute purity, no additives or dyes are used, and ISO 9001-compliant manufacturing procedures are followed to eliminate all external sources of contamination. From raw material selection to clean production and automated packaging, Rainin BioClean Ultra pipette tips are pure and completely safe.

Why should I use capillary and piston pipette tips?

Capillary and piston pipette tips, also known as syringe tips, fit on positive displacement pipettes. Compared to air-displacement pipettes – which are much more common – positive-displacement pipettes and tips are recommended for handling viscous, dense or other liquids that are physically difficult to move into and out of a pipette.

Why? Because air inside air-displacement pipettes can stretch and compress, which can cause measurement inaccuracies when working with a thick liquid. Capillary and piston pipette tips are filled by the piston, which extends down to the opening of the tip, virtually removing air between liquid and the end of the piston. With no air inside, capillary and piston syringe tips deliver excellent accuracy, reproducibility and control with viscous liquids. They are also recommended when pipetting volatile organic liquids and liquids with low surface tensions.

Pipette Tips
Why should I use capillary and piston pipette tips?
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