High-Speed Imaging & Velocimetry Testing

Aerosol Science

Synchronized lighting, in-house fixtures, and DaVis image analysis — annotated footage plus quantitative timing and velocity data for design, debug, and investigation work.

Purpose & when to use

High-Speed Imaging and Velocimetry (HSI / Vel) captures microsecond aerosol and spray events with synchronized lighting — transient plume formation, leaks, breakup, nozzle dynamics, and multi-step mechanism timing — for medical, industrial, consumer aerosol, and fire-suppression devices. Particle Image Velocimetry (PIV) and Particle / Droplet Velocimetry (PDV) add quantitative flow-field and particle-speed data. The work supports root-cause investigations under ICH Q9 and design validation under 21 CFR Part 820. HSI / Vel is foundational for:

Transient leak investigation in medical, consumer, and industrial dispensing systems — leak paths, splatter, and unintended aerosolization captured at microsecond resolution under ICH Q9 quality-risk framing.
Velocity benchmarking for nozzle, valve, and trigger redesigns — particle-speed and flow-field data supporting predicate comparisons and change control under ICH Q5E and 21 CFR Part 820.
Design-validation packages and engineering review decks for medical device, consumer aerosol, and industrial sprayer programs — annotated high-speed footage and timing data aligned to 21 CFR Part 820 design controls.
Pairing with spray pattern, plume geometry, and PSD studies — connects transient actuation behavior to steady-state outcomes for nasal sprays and consumer aerosols under FDA nasal / oral spray framing.
Multi-step mechanism timing validation for valves, triggers, and pump assemblies — trigger-to-frame alignment logs and event-duration metrics under 21 CFR Part 820 design-validation and ICH Q9 risk framing.

Use HSI / Vel when the event you need to characterize is faster than a standard camera can see, when leak paths or transient dynamics are driving a design or compliance question, or when the design team needs quantitative flow-field data to defend a change.

Built for medical, consumer, industrial, and fire-suppression devices

HSI / Vel work spans the device classes where transient events drive the design or safety question — medical, consumer-aerosol, industrial-spray, and fire-suppression product programs under one analytical roof.

Medical deviceDrug delivery and emission
Consumer aerosolSprays · fogs · misters
Pump sprayMechanical pump bottles
Industrial sprayerCommercial dispensing rigs
Fire suppressionDischarge and aerosol jets

Instrumentation & measurement ranges

Frame rate, exposure, field-of-view, and seeding are configured to the event duration and spatial scale of the device under test — every parameter logged in the study plan.

1 – 100 kfpsframe-rate

High-speed cameras (microsecond capture)

Microsecond-scale capture of transient plume formation, breakup, leaks, and mechanism timing — frame rate and exposure tuned to the event duration and trigger window.

0.5 – 10 µspulse-width

Synchronized lighting

Pulsed and continuous lighting locked to the camera trigger — freezes motion at the exposure level and improves plume-boundary contrast for downstream tracking.

0.1 – 100 m/svector-field

Particle Image Velocimetry (PIV) optics

Seeded flow imaging with planar laser sheet and DaVis vector-field analysis — quantitative airflow and seeded-flow maps across the field of view.

0.5 – 100 m/ssingle-particle

Particle / Droplet Velocimetry (PDV)

Single-particle and feature-tracking velocimetry for cases where global seeding isn't practical — particle-speed estimates with documented contrast and feature-trackability checks.

Test method options

Method	Strengths	Tradeoff	Aligned with
High-speed visualization (qualitative + measured timing)	Fast to deploy with minimal setup — the default first-pass method for design / debug investigations. Annotated footage with frame-by-frame timing supports engineering reviews and inspection-readiness narratives under ICH Q9.	Limited quantitative flow detail without velocimetry overlays — bridge to PIV / PDV when speeds need to be measured, not inferred.	ICH Q9
Particle tracking velocimetry (fit for purpose)	Direct particle-speed estimates in regions of interest without global seeding — works when natural contrast is available. Lower setup overhead than full PIV — the right method when single-particle speed is the decision driver.	Requires sufficient particle contrast and trackable features — fails on diffuse plumes or low-contrast backgrounds.	—
PIV flow-field mapping	Quantifies velocity vectors and shear regions across the imaging plane — supports mechanism insights and CFD validation. Datasets feed design-validation packages and predicate comparisons under 21 CFR Part 820 when product variations are assessed.	Requires careful seeding, illumination control, and alignment — higher setup overhead than visualization-only work.	21 CFR Part 820
Leak visualization study (enclosure, joints, interfaces)	Pinpoints leak origin and directionality — annotated footage drives CAPA packages and design controls under 21 CFR Part 820. Pairs naturally with high-speed visualization on adjacent components — supports system-level investigations end to end.	Often needs iterative fixture tuning to expose the leak path — schedule unpredictability is higher than fixed-protocol studies.	21 CFR Part 820
Combined high-speed + plume geometry workflow	Links transient actuation behavior to steady-state plume angle and pattern outcomes — explains the dynamic behind the static result. Strong framing for comparability studies under ICH Q9 risk framing where the regulator wants the dynamic explanation behind a spray-pattern submission.	More instrumentation, synchronization, and analyst time per condition — reserve for cases where the combined view materially changes the decision.	ICH Q9

Setup configurations

Every HSI / Vel study runs on a configuration matched to the event, the device, and the decision the data has to support. Fit-for-purpose setup balances time-resolution and field-of-view with optical alignment and trigger discipline — the dimensions below are the levers we set at study planning:

Device interfaces

In-house fixtures sized to the device under test — repeatable orientation, distance-to-target, and actuation access for medical, consumer, industrial, and fire-suppression devices.

Flow & actuation profiles

Controlled actuation stroke, force, and timing — manual, pneumatic, or mechanical fixtures sized to mimic use conditions when actuation drives the event.

Calibration & verification

Spatial pixel-to-mm scaling, trigger-to-frame alignment, and timing-channel calibration against traceable standards before each capture block.

Environmental controls

Lighting alignment, ambient illumination minimization, and optional flow seeding for PIV — environment recorded alongside each capture in the chain of custody.

Sample numbers

Replicate captures per condition with declared shot-to-shot variability — power sized to the precision target and the decision risk.

Method development inside a documented quality system

HSI / Vel is methodological work without a single formal pharma standard, but every study runs inside a documented quality system framed by the three anchors below — the data contract carried through to §7 outputs.

ISO 17025AccreditedTesting-laboratory competence — documented methods, calibration traceability, and uncertainty contributors.
ICH Q9AlignedQuality-risk management — investigation framing for transient defects and root-cause work.
21 CFR Part 820AlignedFDA design controls — validation framing for medical-device design and change-control packages.

Key data outputs & reporting

Every HSI / Vel study delivers annotated high-speed footage and time-resolved metrics plus the underlying datasets — event duration, onset timing, repeatability statistics, and optional velocity vectors or particle-speed tables — formatted for engineering reviews, change-control packages, or design-validation documentation. The deliverables below cover the standard report; comparability programs and design-validation packages get extended artifacts beneath the table.

Primary outputs

Annotated high-speed videos and still-frame sequences highlighting key events with frame-by-frame time stamps.
Time-resolved metrics (event duration, onset timing, repeatability) with replicate statistics across conditions.
Optional velocity-vector summaries (PIV) and particle-speed distributions for tracked features (PDV).

Deliverables

#	Format	Contents
01	PDF report	Setup, parameters, findings, and analysis notes.
02	Video files and still frames	Annotated captures and exported frames.
03	CSV / XLSX datasets	Timing and velocity metrics with replicate statistics.

Extended deliverables · multi-arm comparability · stability · predicate studies

Comparability appendix — Side-by-side high-speed overlays plus velocity-vector deltas across lots, designs, or actuation conditions.
Design-validation pack — Event-timing logs and trigger-to-frame alignment records aligned to 21 CFR Part 820 design-controls documentation.
Method-development notes — Fixture-selection rationale, illumination and seeding decisions, and acceptance criteria — for design reviews and inspection readiness.

QA / QC & data integrity

Every HSI / Vel study ships with a documented QA / QC envelope sized to the method plan — calibration, timing verification, and analysis controls audited under our ISO 17025 quality system and traceable from sample receipt through final result. ICH Q9 quality-risk framing scopes the controls when the work is an investigation rather than a fixed-protocol study.

Spatial calibration checks for pixel-to-mm scale and field-of-view geometry before each capture block.

Timing verification (trigger-to-frame alignment, clock-channel sync) recorded with the captured frames.

Repeat runs to confirm event reproducibility and quantify shot-to-shot variability across conditions.

Documented camera, lighting, and seeding settings with analysis-software version control alongside exports.

Chain of custody from sample receipt through capture, analysis, and final reporting.

Why ARE Labs

ARE Labs connects technical topics to practical study design, method selection, controlled aerosol work, and reportable evidence without turning technical pages into sales pages.

Reviewed byJamie Balarashti (25 yrs - cascade & inhalation methods) - Weston Schaper (7 yrs - real-time sizing & nanoparticle work)

17025Accredited testing

900+Studies Performed

17+Years in operation

300+Clients supported

Common questions

Quick answers to the questions medical-device, consumer-aerosol, and industrial-spray teams ask most often when scoping a high-speed imaging or velocimetry study — method selection, velocimetry options, capture parameters, and deliverables. The answers below are starting points, not protocols; reach out if your device, event duration, or investigation scope doesn't match what's here, since most HSI / Vel studies need at least one custom fixture or trigger decision.

Q.What problems is high-speed imaging best at solving?

A.Short, transient events: leak puffs, pulsing plumes, spray breakup, and timing issues across multi-step mechanisms. When the event lives below the standard-camera frame rate, HSI is usually the right first move.

Q.Do I need PIV?

A.Only when quantitative flow-field data drives the decision. Many investigations start with visualization and add PIV if the design team needs measured velocities to defend a change or model a flow.

Q.Can you measure droplet speeds?

A.Often, yes — using particle-tracking methods or PDV-style approaches depending on visibility, contrast, and whether seeding is practical for the device and use condition under test.

Q.What affects the setup most?

A.Event duration, required field-of-view, illumination constraints, and whether flow seeding is permitted. We scope these at study planning so the rig is right-sized before the device arrives at the lab.

Q.What do I receive?

A.Annotated videos and still frames, a PDF report with setup and findings, and CSV / XLSX tables for timing and velocity metrics. Quantitative velocity tables are included when PIV or PDV was part of the study.

Standards & guidance

HSI / Vel is methodological and engineering-investigation work — there is no single formal pharma standard for the test category, but every study runs inside a documented quality system. Where we hold third-party accreditation for a scope, methods are documented as accredited (ISO 17025); where the standard frames our investigation or design-validation work, methods are aligned. The cards below list the standards most often relevant to HSI / Vel packages.

QA & Regulatory - Accredited

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High-Speed Imaging & Velocimetry