Filtered vs Non Filtered Pipette Tips Which Should You Use?
- anthonycraig38
- 2 days ago
- 8 min read
A pipette tip looks like a small piece of plastic, but it can decide whether a result stays clean or gets compromised. The difference between filtered and non-filtered pipette tips is simple on the surface: one has a barrier inside the tip, the other does not. In daily lab work, that small barrier can affect contamination control, sample recovery, cost, and even the lifespan of your pipette.
Choosing the wrong tip does not always cause an obvious failure. That is part of the problem. A contaminated PCR run, a drifting control, or a pipette that slowly loses accuracy can all trace back to poor tip selection. The best choice depends on what you are handling, how sensitive the work is, and how much risk the lab can accept.
What filtered pipette tips are designed to do
Filtered pipette tips contain a small porous barrier, usually made from polyethylene or a similar inert material. This filter sits inside the upper part of the tip, between the liquid and the pipette shaft.
The filter is not there to filter the liquid being pipetted. It acts as an aerosol barrier. When liquid is aspirated and dispensed, tiny droplets or aerosols can move upward into the tip. Without a barrier, those aerosols may enter the pipette cone or shaft. From there, they can contaminate the pipette and later affect other samples.
Filtered tips help reduce this risk by blocking aerosols and splashes before they reach the pipette body. Many labs use them as standard practice for sensitive or high-value work.
Filtered tips are especially useful when working with:
DNA and RNA samples
PCR, qPCR, and sequencing workflows
Clinical, diagnostic, or forensic samples
Cell culture media and sterile liquids
Infectious or potentially hazardous material
Low-volume samples where contamination has a large effect
Enzymes, master mixes, and reagents that must remain clean
They also help protect the pipette itself. If a user accidentally aspirates too much liquid, the filter may stop liquid from entering the pipette shaft. This does not make the tip spill-proof, but it adds a useful layer of protection.
What non-filtered pipette tips are best for
Non-filtered pipette tips do not contain an internal barrier. Liquid moves into the tip as usual, and there is open air between the sample and the pipette shaft.
This makes them simpler and usually less expensive. They are widely used for routine lab work where contamination risk is low and the sample is not highly sensitive.
Non-filtered tips are a good fit for:
General buffer preparation
Transferring water or simple aqueous solutions
Teaching labs and basic training
Routine dilutions
Aliquoting non-critical reagents
Work where the same reagent is handled repeatedly
Non-sterile applications where aerosol contamination is not a major concern
For many day-to-day tasks, non-filtered tips are perfectly suitable. A lab does not need to use filtered tips for every transfer if the work does not justify the extra cost. The key is to know when saving money on tips may create a larger cost through failed results, repeated work, or damaged equipment.
The main difference is contamination control
The most important difference between filtered and non-filtered tips is how they manage contamination risk.
Contamination can move in more than one direction during pipetting:
From the sample into the pipette
From the pipette into the next sample
From aerosols into reagents
From one user’s workflow into another user’s results
Filtered tips reduce the chance that aerosols or droplets enter the pipette body. This matters because pipettes are reusable instruments. If the inside of a pipette becomes contaminated, changing the tip alone may not solve the problem.
Non-filtered tips rely more heavily on careful technique. If the user pipettes slowly, keeps the pipette vertical when needed, avoids over-aspiration, and changes tips properly, the risk can stay low for routine work. But in sensitive workflows, good technique may not be enough protection.
A simple example from PCR work
PCR can amplify tiny amounts of genetic material. That is what makes it powerful, but it also makes it vulnerable. A small amount of carryover DNA can appear in a later reaction and create misleading results.
In this case, filtered tips are the safer choice. They reduce aerosol movement into the pipette and help prevent carryover between samples and reagents. For PCR master mix, primers, extracted DNA, and controls, filtered tips are generally worth the extra cost.
A simple example from buffer preparation
Now compare that with preparing a common buffer for a routine experiment. If the buffer is not sterile, not used for molecular testing, and not highly sensitive, a non-filtered tip may be enough.
The cost difference becomes meaningful when a lab uses thousands of tips each month. In that setting, using non-filtered tips for low-risk tasks and filtered tips for high-risk tasks can control spending without lowering quality.
When filtered tips are the better choice
Filtered tips are best when the cost of contamination is higher than the cost of the tip. That includes scientific cost, time cost, and sample cost.
Use filtered tips when handling samples that are hard to replace. Patient samples, extracted nucleic acids, forensic material, and primary cell cultures may not be easy to collect again. A failed result can mean lost time, lost trust, and wasted reagents.
Use filtered tips when working with sterile liquids. The filter helps protect both the sample and the pipette from aerosol movement. This is helpful in cell culture, microbiology, and workflows where sterility affects the result.
Use filtered tips when working with hazardous or infectious materials. The barrier can reduce the chance that aerosols enter the pipette body. This does not replace correct biosafety practice, personal protective equipment, or proper containment, but it adds protection at the point of liquid handling.
Use filtered tips when pipetting volatile, foaming, or viscous samples with care. Some sample types can create aerosols or splashes more easily. Filtered tips may help protect the pipette, although very viscous or solvent-heavy liquids may need special tip types or reverse pipetting techniques.
For labs buying supplies locally, searches such as filtered pipette tips Ghana often come from teams that need reliable contamination control for diagnostics, research, teaching, or quality control work across the country.
When non-filtered tips are enough
Non-filtered tips still have an important place in the lab. They are not a lower-quality choice by default. They are simply suited to different work.
Use non-filtered tips when contamination risk is low. If the task involves transferring water, buffer, dye, or common lab solutions that are not part of a sensitive workflow, standard tips are often fine.
Use non-filtered tips during training. Students and new lab staff can practise pipetting technique without consuming higher-cost filtered tips. Once they move to sensitive samples, they can switch to filtered tips.
Use non-filtered tips for repetitive work with the same material. If a user is dispensing the same reagent into multiple wells and the reagent is not contamination-sensitive, non-filtered tips may be practical.
Use non-filtered tips when the method has already been validated with them. Some established protocols specify a tip type. If the lab changes from non-filtered to filtered tips, it may need to check whether the change affects volume delivery, especially at low volumes.
How filtered and non-filtered tips compare
The right choice becomes clearer when the two types sit side by side.
Feature | Filtered pipette tips | Non-filtered pipette tips |
Internal barrier | Yes, usually a porous aerosol barrier | No internal barrier |
Main purpose | Reduce aerosol contamination and protect the pipette | Routine liquid transfer |
Best for | PCR, DNA, RNA, cell culture, clinical and sterile work | Buffers, water, non-critical reagents, teaching labs |
Pipette protection | Better protection against aerosols and minor splashes | Less protection if liquid enters the shaft |
Cost | Usually higher | Usually lower |
Sample recovery | May retain a tiny amount depending on design and liquid type | Often simple for general aqueous liquids |
Risk control | Stronger for sensitive work | Depends more on technique and workflow |
A practical lab often uses both. Filtered tips go to critical benches and sensitive assays. Non-filtered tips handle routine preparation and low-risk transfers.
Other factors that matter besides the filter
The filter is only one part of tip selection. A filtered tip that fits badly can still cause poor results. A non-filtered tip that is certified clean and fits well may perform better than a cheap filtered tip that leaks or wobbles.
When buying or selecting tips, check these points.
Fit with the pipette
A tip should attach firmly without forcing. If it sits loosely, it may leak or deliver inconsistent volumes. If it requires too much force, it can damage the pipette cone or make ejection difficult.
Universal tips fit many pipette brands, but not all fit equally well. For precise work, test the fit before buying in large quantities.
Sterility and purity
Some tips are sterile. Some are certified free from DNase, RNase, DNA, endotoxins, or pyrogens. These claims matter for molecular biology, cell culture, and diagnostic work.
Do not assume all filtered tips are sterile. The filter and sterility status are separate features. A filtered tip can be non-sterile, and a non-filtered tip can be sterile.
Low-retention surfaces
Low-retention tips have treated surfaces that reduce liquid sticking to the plastic. They are useful for viscous liquids, detergents, protein solutions, enzymes, and low-volume work.
A low-retention non-filtered tip may outperform a standard filtered tip for certain sticky liquids if contamination risk is low. For sensitive sticky samples, a low-retention filtered tip may be the best choice.
Volume range
Tips work best within their intended volume range. Using a large tip for a very small volume can reduce accuracy. Using a small tip near or beyond its limit can increase the risk of liquid entering the pipette.
Match the tip to both the pipette and the volume being transferred. This matters more as volumes get smaller.
A practical way to choose between them
Choosing the right pipette tips becomes easier when the decision starts with risk rather than habit.
Ask these questions before selecting a tip:
Can contamination change the result?
If yes, choose filtered tips.
Is the sample hard to replace?
If yes, choose filtered tips.
Is the work sterile, molecular, diagnostic, or cell-based?
If yes, filtered tips are usually the safer option.
Is this routine preparation with low-risk reagents?
If yes, non-filtered tips may be enough.
Could liquid or aerosols damage the pipette?
If yes, filtered tips add protection.
Has the protocol been validated with a specific tip type?
If yes, follow the protocol or verify the change before switching.
A useful rule is simple: use filtered tips when accuracy depends on clean separation between samples, reagents, and the pipette. Use non-filtered tips when the work is routine and the risk is low.
Common mistakes to avoid
One common mistake is using filtered tips only after contamination problems appear. By then, samples, reagents, and time may already be lost. Sensitive workflows should start with filtered tips as part of the method.
Another mistake is assuming a filter makes poor technique safe. It does not. Users still need to pipette smoothly, avoid touching the inside of tubes, change tips at the right times, and keep pipettes clean.
Some labs also overuse filtered tips for every task. That may be safe, but it can raise costs without much benefit. A better approach is to define which workflows require filtered tips and which can use non-filtered tips.
A final mistake is ignoring storage. Tips should stay covered and clean. Sterile racks should be opened only when needed. Loose tips in open containers may collect dust or contamination, even if they are filtered.
The best choice is usually a mixed system
Filtered and non-filtered pipette tips both belong in a well-run lab. They solve different problems.
Use filtered pipette tips for sensitive, sterile, hazardous, or high-value work where contamination could damage the result or the pipette. Use non-filtered pipette tips for routine, low-risk transfers where a barrier is not needed.
The smartest approach is not to buy one type for everything. It is to create a clear tip policy by workflow. PCR bench, RNA work, cell culture, clinical samples, and sterile tasks get filtered tips. Buffer preparation, training, and routine non-critical transfers can often use non-filtered tips.
That balance protects results while keeping supply costs sensible. A small decision at the tip rack can save hours of repeated work at the bench.
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