Aerosol Products

Specialty Pressurized Spray Systems Testing

Aerosol performance, deposition, formulation, and flammability testing for specialty pressurized spray systems.

ARE Labs evaluates nonstandard pressurized sprays under defined conditions to provide data for development, comparison, safety review, and documentation.

ISO 17025ISO 13320ASTM E264716 CFR 1500.45Reviewed 2026-05-17
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Testing specialty pressurized spray systems

Specialty pressurized spray testing shows how the can, reservoir, valve, actuator, nozzle, pressure source, and formulation work together for the intended application. When the decision depends on droplet size, plume shape, deposition, formulation behavior, or ignition risk, the study may draw on ISO 13320, ASTM E2647, 16 CFR 1500.45, ASTM D3065, and ICH Q1A (R2). Programs are usually scoped when:

  1. PSD testing under ISO 13320 compares pressure setting, propellant, nozzle, or formulation effects on droplet size and respirable fraction.
  2. Spray pattern and plume geometry work uses FDA OINDP concepts or ISO 27427 context to compare valves, actuators, and orientations.
  3. Particle deposition studies under ASTM E2647 quantify residue, coverage, overspray, tracer recovery, or active recovery on targets.
  4. Formulation support under ICH Q8 / Q9 / Q10 evaluates propellant, solvent, suspension, package contact, and assay recovery decisions.
  5. Flammability and ignition screening under 16 CFR 1500.45 or ASTM D3065 compares propellant, solvent, pressure, and package states.

Use this testing when a pressurized spray package falls outside standard aerosol, drug-delivery, or consumer-product categories. Before samples enter testing, the protocol defines the pressure, actuation, distance, orientation, target geometry, controls, and reporting endpoints.

Core test menu for specialty pressurized sprays

Nonstandard pressurized spray programs often combine aerosol sizing, plume imaging, deposition, formulation, and ignition testing. The application, package state, hazard frame, and documentation needs determine which tests are included.

Test method options

MethodStrengthsTradeoffAligned with
Aerosol characterization screen
  • ISO 13320 PSD, plume imaging, and visible spray observations compare pressure, valve, nozzle, propellant, and formulation choices.
  • Screening identifies spray-duration, orientation, fill-level, and clogging effects before deposition or ignition work starts.
Acceptance criteria must come from the product requirement, claim, comparator, or safety question being tested.
ISO 13320
Deposition and coverage study
  • ASTM E2647 coupon, panel, or mannequin layouts quantify deposited mass, target coverage, and overspray by location.
  • Tracer or active recovery links spray output to residue behavior, surface loading, or off-target exposure.
Results apply to the defined geometry, spray distance, orientation, target, and actuation profile.
ASTM E2647
Formulation performance support
  • ICH Q8 / Q9 / Q10 framing connects propellant, solvent, suspension, package contact, and assay recovery to performance risks.
  • HPLC, GC/MS, pH, osmolality, and paired aerosol readouts support pressure-compatible formulation comparisons.
This is development support unless a separate stability or regulatory program is scoped.
ICH Q8 / Q9 / Q10
Flammability and ignition screen
  • 16 CFR 1500.45 framing supports flame projection, ignition distance, and formulation hazard comparisons.
  • Package state, fill level, conditioning, propellant, and solvent changes can be compared under one fixture plan.
The study does not by itself provide transport approval, label authorization, or product certification.
16 CFR 1500.45
Protocol-defined aging comparison
  • ICH Q1A (R2) conditioning can bracket spray output, PSD, plume geometry, deposition, assay, and ignition behavior.
  • Pull-point trend tables support package interaction, valve clogging, leakage, corrosion, and formulation drift decisions.
Study duration follows the conditioning and pull schedule; endpoints should be locked before storage starts.
ICH Q1A (R2)

Setup configurations

Each specialty pressurized spray study is built around the package, pressure source, formulation, intended application, and decision the data must support. Before testing begins, the protocol defines actuation, pressure setting, orientation, sampling geometry, conditioning, containment, controls, analytical endpoints, replicate structure, safety controls, and reporting limits.

Device configuration

Container, reservoir, valve, actuator, nozzle, propellant, pressure source, fill level, operating mode, and package material documented per condition.

Flow & actuation profiles

Pressure setting, spray duration, trigger force, orientation, distance, shot count, interval, flow rate, and temperature or RH conditioning controlled by protocol.

Sampling geometry

Coupons, panels, mannequins, chambers, inline fixtures, sampling manifolds, target locations, and containment selected for the use case.

Sample numbers

Device count, filled-unit count, replicate count, pull points, blanks, controls, and comparator runs sized during protocol development.

Analytical endpoints

PSD, plume metrics, deposited mass, tracer recovery, active assay, package observations, ignition behavior, or aging trends selected per decision.

Quality frame for pressurized spray studies

Specialty pressurized spray programs operate within a documented quality system. These quality anchors connect laboratory competence with the method references commonly used for sizing, deposition, and ignition testing.

  • ISO 17025AccreditedLaboratory competence, calibration traceability, method control, and uncertainty contributors.
  • ISO 13320AlignedLaser diffraction particle sizing principles for droplet and spray spectra.
  • ASTM E2647AlignedDeposition and overspray study framing for spray-applied products.
  • 16 CFR 1500.45AlignedAerosol flame projection and ignition behavior reference.

Key data outputs & reporting

Specialty pressurized spray studies provide endpoint-specific datasets that connect the package setup with measured aerosol, deposition, formulation, and ignition behavior. Reports can support development, troubleshooting, safety review, comparison with other packages, or regulatory documentation. When a program includes stability pulls, package comparisons, formulation-response work, hazard-context narratives, package interaction review, or design-change justification, extended deliverables can provide the supporting appendices.

Primary outputs

  • PSD curves, Dv10 / Dv50 / Dv90, aerodynamic fractions, respirable fraction estimates, and particle concentration time series where applicable.
  • Spray pattern, plume angle, plume width, duration, high-speed image observations, timing metrics, and setup photos.
  • Deposited mass, residue maps, tracer or active recovery, overspray locations, assay values, and surface-specific loading summaries.
  • Ignition distance, flame projection observations, package-state comparisons, leakage notes, corrosion indicators, and aging trend plots.

Deliverables

#FormatContents
01PDF reportProtocol, setup, controls, deviations, endpoint tables, and interpretation limits.
02CSV / XLSX datasetsParticle size, deposition, formulation, ignition, or trend data.
03Images / videoPlume frames, spray pattern files, deposition maps, and ignition records.
Extended deliverables · multi-arm comparability · stability · predicate studies
  • Comparator summary — Side-by-side pressure, valve, actuator, propellant, formulation, target, or package comparisons.
  • Formulation response pack — Batch, assay, spray-output, and package-contact notes tied to formulation variables and observed drift.
  • Hazard context appendix — Ignition observations, conditioning records, fixture geometry, and stated limits for classification discussions.

QA / QC & data integrity

Each specialty pressurized spray study includes a QA/QC plan matched to the endpoint, formulation, and documentation pathway. Controls are run alongside sample collection to keep particle, deposition, formulation, ignition, and aging data traceable from sample receipt through final reporting. The study file documents all deviations and exclusions.

Device-off, chamber background, blank coupon, negative control, positive control, or reference spray runs selected by endpoint.

Flow meters, pressure gauges, particle instruments, balances, imaging scales, timers, environmental sensors, and analytical instruments checked before use.

Actuation timing, pressure setting, spray distance, orientation, temperature, RH, sampling locations, and recovery procedures recorded per run.

Analytical recovery, blank correction, carryover checks, matrix controls, and system suitability included when residues or actives are quantified.

Chain of custody for filled units, coupons, filters, extracts, raw instrument files, images, videos, calculations, and report tables.

GLP-compliant documentation can be specified when the study is designed for that quality pathway.

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)
QualityDocumented study records
900+Studies Performed
17+Years in operation
300+Clients supported

Common questions

Quick answers to questions product, formulation, packaging, and safety teams ask when scoping nonstandard pressurized spray testing: how the method is selected, what sample needs depend on, which fixtures can be built, what affects timing, what data is delivered, what regulatory support means, how caveats are handled, and where ARE Labs' defined testing scope ends.

Q.Which test should a specialty pressurized spray start with?
A.Start with the decision the data must support. PSD measures droplet size, plume imaging shows spray formation, deposition testing measures target loading, formulation support addresses chemistry or compatibility, and flammability testing evaluates ignition behavior.
Q.Can ARE Labs test custom fixtures or unusual spray geometries?
A.Yes. ARE Labs can design custom fixtures, chambers, enclosures, mannequins, and sampling manifolds around the device and intended use, then document the setup in the final report.
Q.How many filled units are needed?
A.Sample requirements depend on the number of configurations, endpoints, conditioning points, controls, and replicates. Counts are established during protocol development after the variability and acceptance logic have been defined.
Q.Can testing support transport or labeling decisions?
A.Testing can provide aerosol performance, deposition, formulation, and ignition data for technical review. Full DOT classification, VOC compliance, labeling, or product certification may require support from additional specialists.
Q.What data will we receive?
A.Deliverables may include a PDF report, CSV/XLSX datasets, PSD curves, plume images, deposition maps, assay or tracer recovery results, ignition observations, trend plots, and QA/QC records.

Standards & guidance

Because no single standard covers every package, pressure source, and use case, specialty pressurized spray programs are usually designed for a defined purpose. ARE Labs selects references that match each measurement endpoint and, where applicable, reports whether the method is accredited, aligned, or conformant. The standards below are commonly used for sizing, deposition, formulation, ignition, and aging work.

QA & Regulatory - Accredited

ISO 17025

Testing-laboratory competence, calibration traceability, method control, and reporting qualityView standard ->Particle & Aerosol Measurement - Aligned

ISO 13320

Laser diffraction particle sizing principles for pressurized spray droplet spectraView standard ->Spray & Deposition - Aligned

ASTM E2647

Spray deposition, residue recovery, target coverage, and overspray study framingView standard ->Formulation - Aligned

ICH Q8 / Q9 / Q10

Formulation design, risk management, and pharmaceutical quality-system contextView standard ->Flammability - Aligned

16 CFR 1500.45

Consumer aerosol flame projection and ignition behavior reference, with ASTM D3065 context when requestedView standard ->Stability - Aligned

ICH Q1A (R2)

Stability storage concepts and trend interpretation for pressure-package studiesView standard ->

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