Size range
Public family boundary: 20–200 nm. Select exact size from the instrument or application requirement.
Sub-200 nm pathway
Prepared silica dispersions for nanoscale research and metrology evaluation.
Applied Physics currently presents a 20–200 nm silica nanoparticle family at a public 10 wt% configuration with aqueous and ethanol options and multiple bottle volumes. Exact size points, tolerance, medium, concentration and certificate scope require quotation confirmation.
Prepared format
Dispersion format can reduce the initial dry-wetting burden but introduces medium, stability and dilution controls.
Commercial configuration
Current product page presents 25 mL–500 mL volume options. Verify the exact combination and availability.
Evidence
Request lot-specific size method, distribution, concentration, certificate, storage and safety documentation.
Application fit
Evaluate by response, not range alone.
| Potential use | Required qualification | Do not assume |
|---|---|---|
| Optical research | Wavelength, medium, path, concentration and instrument response | One size is equally visible in every instrument |
| Semiconductor metrology | Particle material, tool, wafer, deposition and size evidence | Loose dispersion equals a finished wafer standard |
| Colloid research | pH, ionic strength, zeta potential, aggregation and time | Stock stability transfers into the final matrix |
| Formulation work | Surface, matrix, loading, mixing and final properties | Native silica is compatible with every polymer or solvent |
| Reference-material use | Method, measurand, uncertainty and traceability statement | Catalog range establishes calibration suitability |
Receiving inspection
Verify the bottle before preparing the method.
- Match product, nominal size, medium, concentration, volume and lot to the order
- Review the certificate and identify the measurement method
- Inspect seal, leakage, evaporation, visible sediment or contamination
- Confirm storage instructions and first-open logging
- Use the product-specific conditioning procedure before withdrawal
- Run representative application verification when failure has material consequences
Dilution
Treat a 10 wt% stock as a controlled starting point.
Before applying C₁V₁ = C₂V₂, confirm whether the certificate concentration and desired final concentration use compatible units. Account for stock homogeneity, transfer uncertainty, diluent purity, stabilizer dilution and final aggregation state.
Questions engineers ask
Frequently asked questions
Does the family include every integer size from 20 to 200 nm?
Do not assume so. The public family range describes the portfolio boundary; quote the exact target size and tolerance for availability review.
Are both aqueous and ethanol configurations available for every size?
The public family page presents aqueous and ethanol options, but the exact combination must be confirmed for the requested size and concentration.
Sources and verification
Technical basis
- Applied Physics 20–200 nm silica nanoparticles — Current public range, concentration and format reference.
- NIST nanoparticle measurement protocols — Supports method-specific size and evidence review.
- NIOSH nanomaterial handling — Supports product-form-specific safety controls.
Commercial specifications should be confirmed against the current Applied Physics quotation, certificate, lot documentation and product page before purchase or protocol use.
Continue the research
Related technical guidance
Aqueous vs. ethanol
Choose the carrier from the process.
Particle size distribution
Add population width to the nominal size.
Zeta potential
Evaluate stability under the use condition.
Applied Physics technical pathway
Need a particle specification reviewed?
Send the target size, medium, concentration, application, certificate requirements and shipping destination. Applied Physics can evaluate the appropriate silica family or custom pathway.