Choosing Pipette Tips: Volume, Fit and Quality in the Lab
- 4 min reading time
Choose the right pipette tip by four criteria: the volume range of your pipette, the fit with your pipette model, the required purity (non-sterile, sterile or filtered) and the packaging format, meaning bulk, racked or refill system. When these points match, pipette and tip work reliably together as a system and you avoid buying the wrong product.
The volume range determines the tip size
Each pipette tip is designed for a specific volume range. What counts is the range of your pipette: a tip that is much larger or smaller than necessary reduces accuracy and repeatability. Many manufacturers also mark the sizes by the colour of the tip or rack. These colour codes are common but not uniformly regulated.
| Pipette volume range | Typical tip size | Common colour coding |
|---|---|---|
| 0.1–10 µl | 10 µl, also as an extended version | usually clear |
| 2–200 µl | 200 µl | often yellow |
| 100–1,000 µl | 1,000 µl | often blue |
| 0.5–5 ml | 5 ml | usually clear |
| 1–10 ml | 10 ml | usually clear |
There are also intermediate sizes such as 20 µl, 300 µl or 1,250 µl that are matched to specific pipette models or multichannel pipettes. Always check which tip size the pipette manufacturer specifies for your model.
Fit and compatibility with the pipette
Not every tip fits every pipette. The pipette cone and the tip opening must match so that the tip seals tightly, can be attached with normal force and is ejected cleanly. If a tip sits too loosely, air can get in. If it sits too tightly, attachment and ejection forces increase.
- Brand-specific tips are matched to one manufacturer's pipettes.
- Universal tips fit pipettes from several brands, according to the supplier. The relevant compatibility list shows which models are covered.
- Multichannel pipettes require tips that sit evenly on all channels.
The ISO 8655 standard describes requirements and test methods for piston-operated pipettes. A pipette manufacturer's accuracy specifications usually refer to the pipette in combination with specific tips. You will find pipettes and accessories in the pipettes and pipette tips category.
Sterile, non-sterile or filtered?
Non-sterile tips are sufficient for many routine tasks. Sterile tips are sterilised after production and labelled accordingly. Filter tips contain a barrier that reduces the entry of aerosols and liquid into the pipette shaft, protecting both pipette and samples from carry-over. Which version your lab needs is defined by your internal work instructions.
For sensitive applications, manufacturers offer tips with documented purity, for example free from DNase, RNase, human DNA or pyrogens. Look for batch-specific certificates. Further versions include:
- Low retention tips with a particularly smooth inner surface to which less liquid adheres, for example with viscous or detergent-containing solutions
- Extended tips for deep or narrow vessels
- Graduated tips with volume markings for visual checks
- Tips made of pure polypropylene without dyes or additives, when interactions with samples are to be ruled out
Packaging formats: bulk, racked or refill system
The packaging format affects workflow, storage space and the amount of waste. Bulk tips in bags save space but have to be loaded into racks before use. Racked tips are ready to use immediately and are the usual format for sterile versions. Refill systems combine both: a sturdy rack is reloaded with inserts, which saves packaging material. Information on whether racks can be autoclaved is provided by the manufacturer.
Alongside pipetting work, labs need further consumables such as test tubes and test tube racks. For protection while working, see our article comparing medical gloves.
Checklist for buying pipette tips
- Record the volume range and model name of every pipette in the lab
- Check compatibility: brand-specific tips or universal tips with a matching compatibility list
- Define the version: non-sterile, sterile, filtered, low retention, extended
- Check purity specifications and batch certificates if your applications require them
- Choose the packaging format based on workflow and storage space
- Estimate monthly consumption and note the supplier's packaging unit
- When switching tip brands, test a trial delivery in your own workflow
Related categories
Frequently asked questions
What is a filter tip?
A filter tip contains a barrier that reduces the entry of aerosols and liquid into the pipette. It protects pipette and samples from carry-over.
Are pipette tips reusable?
Pipette tips are generally single-use items. The manufacturer's specifications and your lab's work instructions are decisive.
Do universal tips fit every pipette?
No, universal tips fit pipettes from several brands, but not all of them. The supplier's compatibility list shows which models are covered.
Which tip fits which volume?
Choose the tip that the pipette manufacturer specifies for the volume range of your pipette. A tip that is too large or too small reduces accuracy.
What does "low retention" mean?
Low retention tips have a particularly smooth inner surface to which less liquid adheres. They are often used for viscous or detergent-containing solutions.
Explore the range of established suppliers in the pipettes and pipette tips category. Looking for a specific tip for your pipette model? Send us a product request. We deliver to Germany, Austria and Switzerland.
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