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Pangnostics dFC ZetaView® Evolution ZetaView® x30 Lyophilized Exosomes F-NTA Antibodies
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Particle Metrix · Reference standard

A known sample, so you can trust the unknown ones.

Lyophilized Exosomes are stable, extensively characterized biological particles — positive controls and calibration standards derived from traceable human cell lines. Reconstitute, measure, and benchmark your instrument against a value you can rely on, with no cold chain required.

Lyophilized EV standard · reconstitute & measureLot-traced
lyophilized cake reconstitute characterized EVs
Certified size, concentration & markersCD9 · CD63 · CD81
Source-verified
Traceable human cell lines
4 attributes
Size, conc, markers, morphology
No cold chain
Lyophilized stability
Lot-to-lot
Batch consistency
Why a reference standard

Reproducibility starts with a known.

NTA gives absolute, calibration-free numbers — but to trust those numbers over time, across operators, and between sites, you need a stable sample of known properties to measure against. A well-characterized EV standard is that anchor: it tells you whether a shift in your data is real biology or instrument drift.

Because these exosomes are lyophilized, each vial is shelf-stable and ships without cold-chain logistics — the same lot can benchmark an instrument today and a year from now.

Benchmarking in action

Validate instrument performance

Run the standard repeatedly and plot each result against its certified value. Points inside the ±2σ band mean the instrument is in control; a systematic shift pushes them toward — and past — the limits, flagging drift before it reaches your real samples.

Introduce instrument bias and watch the control chart respond. A reliable standard turns an invisible drift into a visible, catchable signal.

Measured vs certified
Within ±2σ
QC status
Levey–Jennings control chart · 12 runsQC
Instrument bias 0%
What you get

One standard, four jobs.

Benchmark

Cross-site validation

Confirm instrument performance across multiple sites and timepoints with a common reference.

Develop

Assay reproducibility

Build reproducibility into EV assays and diagnostic workflows from the start.

Train

Operator onboarding

A reliable standard for training lab staff and students on consistent technique.

Comply

QC validation packages

Support QC validation in pre-clinical and commercial pipelines.

Characterized

Tested every lot

Each lot tested for size, concentration, protein markers, and morphology.

Stable

Lyophilized format

Long-term stability without cold-chain logistics — ship and store with ease.

Used across

Wherever a control is needed.

Extracellular vesicles

Subpopulation tracking using CD9 / CD63 / CD81 markers.

Virology

Confirm viral capsid protein presence in particle populations.

Nanomedicine

Validate surface modifications of lipid or polymer nanoparticles.

Method validation

Anchor instrument qualification and stability studies.

At a glance

Reference standard details.

Source
Traceable, ethically sourced human cell lines
Format
Lyophilized — reconstitutable, shelf-stable, no cold chain
Characterization
Per-lot testing of size, concentration, protein markers, and morphology
Markers
Tetraspanin-positive (CD9 / CD63 / CD81) for subpopulation work
Use
Positive control & calibration standard for NTA and EV assays
Control-chart illustration is a teaching model — band widths and behaviour are representative, not certified product values.

Build reproducibility into every measurement.

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For Research Use Only. Not for use in diagnostic procedures.