CONFIGURABLE MEMBRANE ENRICHMENT

Membraneenrichment

Enrich first. Detect with substantially greater sensitivity.

Concentrate low-abundance cells, bacteria and small particles from sputum, water, culture media or another sample by centrifugation / embedded adsorption or filtration, then connect the enriched membrane to microscopy, fluorescence, PCR / NGS or environmental and industrial analysis.

Scroll to see targets gather at the membrane

ENRICHMENT FIRST

Concentrate and retain targets at the membrane surface first, then connect morphology, fluorescence, PCR / NGS, or environmental and industrial testing.

  • Target material
  • Sample carrier
  • Enrichment membrane

Principle schematic · particle numbers and proportions do not state concentration or recovery rate

MEMBRANE PROPERTIES

Seven membrane properties
that make enrichment count

Typical workflows reach about 20–100× enrichment depending on sample volume and process conditions. With a micron-scale ultra-thin membrane, adjustable pore size, ultra-low fluorescence background and clearing for observation, targets are more concentrated, interference is lower and downstream detection finds them more easily.

01 / 07 · Enrichment by sample volume

20–100×

Achievable enrichment

Micron-scale ultra-thin enrichment interface

A micron-scale ultra-thin membrane forms a compact interface for targets; depending on sample volume the platform reaches about 20–100× enrichment, bringing targets more concentrated into downstream detection.

02 / 07 · Retention matched to the target

0.22–0.45μm

Pore-size range in published materials

Adjustable pore size for targeted retention

Pore size is chosen by target size and sample condition, so targets stay at the membrane while carrier liquid passes and unrelated material interferes less.

03 / 07 · Selectable surface properties

Hydrophilic / hydrophobic

Two surface-property directions

Suits different sample conditions

Hydrophilic, hydrophobic and other surface options suit different sample conditions and improve contact between the sample and the membrane and the retention of targets.

04 / 07 · Stable through processing

3media

AcidAlkaliOrganic solvent

A stable membrane across processing steps

The membrane tolerates the acid, alkali and organic-solvent conditions the workflow requires, so the enrichment interface connects to digestion, staining and other processing.

05 / 07 · Compatible with direct observation

0extra transfers

Compatible direct-observation workflows

Observe the membrane directly after clearing

Clearing makes the pore network disappear under the microscope; compatible workflows observe targets on the membrane without further elution or transfer, reducing handling loss.

06 / 07 · Fluorescence and bright-field microscopy

Ultra-low fluorescence
can be cleared

Direct observation on the membrane, no elution or transfer

Targets on the membrane can be observed directly

Suitable membrane types combine an ultra-low fluorescence background with clearing by matched treatment; targets enriched on the membrane can go straight to fluorescence or bright-field microscopy without first being eluted or transferred.

07 / 07 · Thin but stable

Positive / negative pressure

Supports enrichment and post-processing

A thin membrane that stays structurally sound

Mechanical stability supports filtration, transfer and post-processing while keeping the membrane flat and intact as the workflow requires.

TWO ROUTES

Two parallel enrichment routes,
one membrane-surface logic

Choose centrifugation / embedded adsorption for smaller or standardised batch workflows, and evaluate filtration / retention for larger liquid volumes. Both routes concentrate targets at the membrane surface, with membrane type and conditions set by sample, target and detection method.

  • ROUTE ACentrifugal action · embedded adsorption
  • ROUTE BDirect filtration · retention

ROUTE A · Centrifugal action

Centrifugation / embedded-adsorption
membrane enrichment

After matched pretreatment, the sample enters the sandwich cup, where centrifugation and embedded adsorption concentrate targets at the ultra-thin membrane, suited to standardised slide preparation and review.

Mechanism
Centrifugation / embedded adsorption
Membrane role
Targets stay and concentrate at the membrane surface
Next step
Clearing, slide preparation, staining and review

STRUCTURE · Sandwich cup

The membrane sits
in the cup’s cap

A one-piece blue long-wing cap, the single slide inside it with its round ultra-thin membrane facing the cup, a separate seal and a clear cup assemble layer by layer into one enrichment unit.

ENRICHED MEMBRANE

Withdraw the slide;
the membrane moves on to detection

Once the slide is half withdrawn, the round membrane at its centre comes out with it; the targets enriched on it continue to clearing, slide preparation, staining and review.

Red markers only show where enrichment happens, not the form or number of targets.

Explore the centrifugal route

ROUTE B · Direct filtration

Filtration membrane enrichment

After matched pretreatment, larger liquid volumes pass through the filtration membrane, which concentrates cells, bacteria or small particles at its surface for microscopy or molecular preprocessing.

Mechanism
The sample flows through the filtration membrane
Membrane role
Targets are retained and concentrated at the membrane surface
Next step
On-membrane observation, or straight into lysis and molecular preprocessing

FILTRATION

Large sample volumes,
gathered on one membrane

The upper part is the complete red-cap clear collection tube and the lower part the red slide-preparation device; the white disc faces outward and fits with the black filter end and the red barrel. The enriched membrane can go to microscopy or into lysis and molecular preprocessing.

Appearance is corrected against photographs; the internal channels and the white disc’s function follow the formal product documents.

Explore the filtration route

EVIDENCE & RESOURCES

Original membrane technology
that concentrates more target material

Tianqi Medical develops membrane materials, enrichment consumables and workflows as one platform that concentrates and retains targets at the membrane surface. Once enriched, the sample can connect to morphology, fluorescence, nucleic-acid or other methods with fewer avoidable transfer and elution losses.

  1. 01

    Explain the principle

    Matched clearing medium reduces light scattering within a porous membrane while targets remain at its surface for observation.

  2. 02

    Verify the performance

    Enrichment range, membrane properties and workflow outcomes are verified under their applicable sample and process conditions.

  3. 03

    Deliver the system

    Core membranes, consumables, reagents, instruments and digital analysis form a connected product system.

ENRICHMENT FIRST · DETECTION NEXT

Enrich the target,
then connect downstream detection

The enriched membrane interface can connect to morphology, fluorescence, nucleic-acid and other methods as needed. Our technical team can explain how the platform fits the existing workflow and which product system carries it forward.

  • Increase target concentration
  • Reduce avoidable transfer and elution loss
  • Connect existing detection methods
  • Support manual and automated workflows