Filtration accuracy has quietly become one of the most decisive steps in sample preparation. When sample volumes shrink below 10 mL, small errors become large problems, lost droplets, tilted meshes, uneven pipette angles, open-tube evaporation, or unnecessary centrifuge queues. In cell-focused workflows, filtration is not a side task; it is the gate that determines what reaches the next step, whether that next step involves Cell separation technology, Cell enrichment techniques, or Antibody Cell Separation. Many labs lean on Lab Cell Strainers, but not every strainer fits every workflow, especially when volumes are small and timing is tight. This is why devices that integrate directly with pipettes, seal reliably, and filter both ways without repositioning are gaining adoption.
Among these, the pluriSelect Pipette-Strainer family has created a clear choice for labs working with small liquid volumes. The design is built to reduce open handling time, stabilize the filtration interface, and speed up transfers into downstream steps without introducing workflow interruptions. What makes this family especially practical is that it is not limited to a single pipette type. Labs can choose between Pipette-Strainer-T, designed for 1–5 mL pipette tips, and Pipette-Strainer-S, designed for serological pipettes that go up to 10 mL. Each version serves the same core purpose, controlled, two-way small volume filtration, but the way they plug into daily workflows is different.
This article focuses on helping labs decide which device fits more naturally into their routines, not just from a technical standpoint, but from a workflow standpoint. It is not about lab trends or dramatic claims. It is about practical alignment: how you load, filter, transfer, and preserve the sample before the next enrichment or separation step begins.
What Is the Pipette-Strainer?
The Pipette-Strainer is a two-way filtration device built for small liquid volumes. Unlike conventional gravity-only Lab Cell Strainers, it allows researchers to guide the sample through the mesh using pipette-controlled pressure. The top of the device is made from a perforated elastomer, which fits tightly around the pipette or serological tip, depending on the version selected. The mesh area is compact (0.5 cm²), offering enough filtration surface for fast movement without the bulk of larger strainers. The strainer housing and tray are made of Polypropylene (PP), providing chemical compatibility, mechanical stability, and the ability to withstand autoclaving at 121°C for repeated sterile use. The mesh itself is made of PET, a durable polymer that supports gentle filtration without absorbing liquid or swelling when exposed to common laboratory buffers.
What makes the system different from other Lab Cell Strainers is not complexity, it is control. The elastomer seal reduces airflow around the sample path. The friction surface stabilizes movements. The two-way design removes the need to pour or reposition. The sample moves through the mesh when the researcher wants it to, not after a long chain of steps.
Understanding the Two Versions
Both versions share the same backbone: a perforated elastomer top, PET mesh, and PP housing. But their openings and intended pipettes differ.
Pipette-Strainer-T
Fits standard 1–5 mL pipette tips. Ideal when filtration must happen during aspiration or dispensing. Offers high friction grip around the pipette tip, preventing slipping or accidental overflow. Particularly useful in labs handling limited volumes, clinical trial aliquots, rare immune cell suspensions, or any sample where 1–5 mL is the routine processing range.


Pipette-Strainer-S
Fits serological pipettes with working volumes up to 10 mL. Designed for labs that prefer broader aspiration capacity without switching tools mid-workflow. The friction surface stabilizes the serological pipette as well, enabling step-by-step handling without turbulence, splashing, or liquid overflow. Ideal for labs that handle small biopsy digests, bone marrow aspirate preps, serum clarification, or low-pressure syringe-assisted extractions.
Workflow Comparison: Which Fits Better?
1. Processing Time and Setup
Traditional filtration tools may require balancing strainers or waiting for centrifuge slots. Pipette-Strainer-T avoids these queues by filtering through the pipette tip immediately. Pipette-Strainer-S reduces time too, especially by skipping rotor balancing and enabling direct filtration during aspiration using a serological pipette.
2. Tube or Plate Integration
Many labs need filtration tools to fit into a variety of tube formats. The T-version fits micro-reaction tubes easily without needing transfers. The S-version fits 50 mL, 15 mL, and 2 mL tubes when paired with low pressure or syringe setups. Both work well in strainer cascade setups when samples require progressive debris removal.
3. Pressure Assistance
In Antibody Cell Separation workflows, initial debris removal must be gentle. The T-version allows users to apply pipette-driven pressure without turbulence. The S-version supports positive or negative pressure via serological or syringe assistance, making it suitable for dense or viscous samples without clog interruptions.
4. Evaporation and Spillage Control
Both versions reduce evaporation by creating a tight seal around the sample path. The T-version reduces spillage by stabilizing the pipette tip, especially when tubes are open. The S-version reduces spills by filtering without pouring between containers. With both, less open-tube time means fewer shifts in concentration.
5. Cell Recovery and Integrity
The Pipette-Strainer-T supports Cell enrichment techniques by minimizing sample loss during aspiration, preserving immune cell subtypes, and improving yield for rare cell assays. The Pipette-Strainer-S supports cell integrity by avoiding unnecessary spins and reducing sample turbulence before density gradient layering or antibody incubations.
6. Contamination Risk Reduction
Fewer open steps = fewer contamination points. The T-version keeps handling enclosed during pipetting. The S-version avoids pouring and re-aligning mesh, reducing exposure. This supports both cell separation technology and diagnostics where sterility and sample integrity impact assay sensitivity.
7. Consumable and Cost Control
The T-version reduces pipette tip wastage by filtering during aspiration, not after. The S-version reduces repeat filtration runs by avoiding clogging or spills. Both housings are reusable, autoclavable, and compatible with lab buffers, improving per-sample filtration ROI.
Which Mesh Size Fits Which Workflow?
Even though the article focuses on workflow fit, mesh size impacts throughput too:
Cell strainer 40 um → Ideal for removing fine clumps or micro-debris


Cell strainer 70 um / 70 um cell strainer → Ideal for bone marrow, biopsy digests


Cell strainer 100 um / 100 um strainer / 100 um strainer → Ideal for coarse debris, cell clusters
With the Pipette-Strainer, researchers can perform cascade straining smoothly by starting at a higher mesh size, preventing clogging and protecting yield as finer meshes are introduced.
Where Pipette-Strainers Make the Most Difference
When to choose Pipette-Strainer-T
When samples are 1–5 mL routinely


When filtration must happen during aspiration


When droplet loss must be minimized


When micro-reaction tubes or plates are the default


When to choose Pipette-Strainer-S
When aspiration volumes reach up to 10 mL


When serological pipettes are standard


When syringe-assisted low pressure may be required


When serum, biopsy digests, or dense aspirates are common
Conclusion
Even though labs may use a Cell Strainer for filtration, the choice of workflow fit matters just as much as mesh size. The Pipette-Strainer-T is ideal for immediate filtration through 1–5 mL tips, preventing spills and reducing sample loss. The Pipette-Strainer-S supports up to 10 mL serological pipettes and gentle low-pressure syringe assistance, making it more flexible when dense suspensions are involved. Both versions share reusable housing, airtight elastomer fitting, high friction grip, and compatibility with standard laboratory tubes and buffers.
As labs continue to modernize cell separation technology, filtration tools that cut waiting time, minimize over-handling, and stabilize mesh interfaces without turbulence will become essential. The Pipette-Strainer does not replace science, it protects it. It preserves volume, reduces repeat runs, and complements Lab Cell Strainers by extending filtration control into small-volume workflows. For labs working on sensitive samples, Antibody Cell Separation, or structured cascade straining, this tool improves reliability without introducing complexity.

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