A nanoparticle size analyzer is an instrument that measures the size – and, in the case of NTA-based systems, the concentration of nanoparticles suspended in liquid. Unlike bulk or ensemble-based sizing instruments, an NTA-based analyzer measures particles individually, producing a true number-based size distribution rather than a single averaged value.
Envision, Hyperion Analytical’s nanoparticle size analyzer, is built specifically to address the sensitivity, precision, and reliability limits that conventional NTA instruments face when working with today’s most demanding samples, extracellular vesicles, viral particles, liposomes, and multi-component formulations that push past what earlier-generation NTA platforms can reliably resolve.
Why Choose the Envision Nanoparticle Size Analyzer?
Three things set Envision apart from other NTA-based instruments on the market:
- Lower practical detection limit — a superior signal-to-noise optical design enables reliable measurement of smaller, more weakly scattering particles than conventional NTA platforms typically achieve
- Extended fluorescence stability — significantly longer usable observation time for labeled samples, where many competing systems suffer rapid photobleaching within seconds
- Calibration-free, standards-compliant measurement — NTA per ISO 19430:2024 and ASTM E2834-12, with no calibration standards required for accurate results
How the Envision Nanoparticle Size Analyzer Works
Envision uses the same core NTA principle as any Nanoparticle Tracking Analysis system tracking Brownian motion to calculate particle size via the Stokes-Einstein equation. What differentiates Envision is its optical implementation:
Light-sheet optical design Envision uses light-sheet-forming optics that focus the laser precisely into the measurement volume, matched to the observation optics’ focal depth. This produces a high signal-to-noise image, enabling use of a more sensitive sCMOS camera along with adjustable laser power to reduce background noise and minimize photobleaching of fluorophores.
Sealed, pump-driven fluidics Rather than syringe-loaded sample introduction, Envision uses a built-in sample pump paired with a sealed fluid path eliminating the drips, bubbles, and dust contamination common to open or syringe-based systems, while ensuring consistent, repeatable flow speeds across a measurement.
What Does the Envision Nanoparticle Size Analyzer Measure?
In a single measurement, Envision reports:
- Particle size distribution across the instrument’s 10–1000 nm range
- Absolute particle concentration, in particles per milliliter
- Fluorescence intensity for labeled populations, in fluorescence mode
- Aggregate proportion, distinguishing monomer and aggregate populations within the same sample
Key Features of the Envision NTA Instrument
- Breakthrough lower limit of detection — a superior signal-to-noise ratio enables measurement of extremely small particles beyond the reach of many conventional NTA analyzers, though the exact lower limit varies with material refractive index
- Extended dynamic range — the lower detection limit can be extended while retaining large-particle measurement capability, supported by a dedicated vibration isolation system that protects accuracy across the full range
- Fast processing — typically acquires and analyzes 1,000 particles in approximately 1 minute
- Minimal sample requirement — as little as 200 μL at 10⁶ particles/mL, across a pH range of 2–12, with roughly 40 nL of sample volume analyzed per measurement (varies with duration and field-of-view settings)
- Fluorescence stability — where many other systems limit fluorescent particle observation to a few seconds before photobleaching, Envision extends usable observation to 10 seconds and, in some cases, several minutes
- Structurally robust build — components selected to specification from a vetted vendor network, supporting long-term reliability and minimal servicing cost; operates across 5°C to 45°C at up to 85% humidity (non-condensing)
Benefits of Using an NTA-Based Nanoparticle Size Analyzer
For teams deciding between an NTA-based instrument and alternative sizing technologies, the purchase-relevant advantages are:
- You get concentration data without a second instrument — ensemble techniques like DLS don’t provide direct particle counts; NTA does, in the same measurement as size
- Polydisperse and biological samples are usable as-is — techniques sensitive to sample heterogeneity often require extensive sample prep or fail outright on real-world biological samples; NTA handles them natively
- No calibration program to maintain — a physics-based measurement approach removes an ongoing calibration burden that indirect sizing methods require
- Lower long-term cost of ownership for QC use — reproducibility across operators and sessions reduces the retraining and requalification overhead common with more operator-sensitive techniques
Particle Size Measurement Range and Performance
Envision resolves particles from approximately 10 to 1000 nanometers. The practical lower detection limit depends on the refractive index of the material being measured — for lower-refractive-index materials such as polystyrene latex (a common calibration standard), detection has been demonstrated down to approximately 30 nm. Higher-refractive-index materials may be resolved closer to the instrument’s theoretical 10 nm floor. This range comfortably covers the full size distribution of extracellular vesicles and exosomes (30–150 nm), smaller liposomes and drug delivery nanoparticles, and smaller viral particles.
Applications of the Envision Nanoparticle Size Analyzer
- Extracellular vesicles and exosome characterization — precise sizing and concentration analysis across the 30–150 nm exosome range, plus detection of 100–1000 nm microvesicles, supporting cancer biomarker discovery, neurodegenerative disease research, and regenerative medicine
- Nanoparticle concentration analysis — pharmaceutical, food & beverage, environmental, and materials science applications, including nanoformulations containing liposomes, solid lipid nanoparticles, and polymeric nanoparticles
- Virus counting and concentration — verifying engineered viral particle size for vaccine development, viral load monitoring, and gene therapy applications; see also viruses and virus-like particles
Typical Envision Measurement Workflow
While the underlying NTA measurement steps are the same across any NTA instrument. Envision’s workflow is built for speed and repeatability:
- Pipette load — sample is loaded by pipette rather than syringe, avoiding drips and bubble introduction
- Automated SOP execution — a pre-configured Standard Operating Procedure handles flow rate, stabilization, and measurement timing automatically
- Real-time tracking feedback — the operator sees live particle tracks during setup, confirming the sample is at an appropriate concentration before committing to a full measurement
- Automated cleaning cycle — the system rinses between samples without requiring manual cell disassembly, supporting fast turnaround between measurements
Envision vs. Conventional Nanoparticle Size Analyzers
| Conventional NTA Instruments | Envision NTA | |
| Lower detection limit | Typically limited by signal-to-noise floor | Extended via light-sheet optics and adjustable laser power |
| Fluorescence observation time | Often a few seconds before photobleaching | 10 seconds to several minutes |
| Sample loading | Frequently syringe-based | Pipette-loaded, sealed fluid path |
| Calibration | Varies by platform | Not required — physics-based measurement |
| Standards compliance | Varies by platform | ISO 19430:2024, ASTM E2834-12 |
| Cleaning between samples | Often manual cell disassembly | Automated cleaning cycle |
Choosing the Right Nanoparticle Size Analyzer
Our NTA guide covers the vendor-neutral criteria worth evaluating in any NTA instrument – detection sensitivity, dynamic range, sample volume requirements, fluorescence capability, calibration needs, throughput, and standards compliance. Envision is built to perform strongly against each of these criteria; see the Technical Specifications and Key Features sections above for the specific data.
Technical Specifications
| Specification | Value |
| Measurable size range | 10–1000 nm (lower limit varies with material refractive index) |
| Minimum sample volume | 200 μL |
| Minimum concentration | 10⁶ particles/mL |
| Sample pH range | 2–12 |
| Analyzed sample volume per measurement | ~40 nL (varies with duration/field-of-view settings) |
| Typical measurement speed | ~1,000 particles analyzed in ~1 minute |
| Camera | sCMOS, 40 fps frame rate |
| Operating temperature range | 5°C to 45°C |
| Operating humidity | Up to 85% (non-condensing) |
| Standards compliance | ISO 19430:2024, ASTM E2834-12 |
| Laser warranty | 3 years |
| Other components warranty | 2 years (excludes sample cell and tubing) |
| Connectivity | USB |
Software and Data Analysis Capabilities
Envision’s software is built around real-world laboratory workflows, automating user-dependent variables to improve throughput and repeatability:
- Pre-configured setup — software installs on your PC with USB communication to the instrument
- Customizable SOPs — fully configurable Standard Operating Procedures tailored to specific samples or applications
- Dual-mode analysis — thorough data analysis in scatter and/or fluorescence mode within a single software environment
- Adaptive laser tracking — when scatter from one laser is too weak for reliable detection, the software automatically draws on data from a higher-power laser to maintain tracking, performing consistently regardless of particle size distribution or concentration profile
Why Researchers Choose Hyperion Analytical
Hyperion Analytical’s team brings decades of combined experience in materials science, chemistry, and analytical instrumentation to every Envision deployment. Beyond the instrument itself, that means free technical support during the warranty period (phone, email, and remote-control software), available maintenance, service, and IQ/OQ/PQ contracts, and additional training on request.
What size range does the Envision nanoparticle size analyzer measure?
Envision resolves particles from approximately 10 to 1000 nanometers. The practical lower limit depends on material refractive index demonstrated down to 30 nm for polystyrene latex standards.
How much sample does Envision require?
As little as 200 μL at a minimum concentration of 10⁶ particles/mL, across a pH range of 2–12.
Is Envision suitable for exosome and extracellular vesicle analysis?
Yes. Envision’s extended lower detection limit and fluorescence stability make it well suited to resolving the 30–150 nm exosome size range and detecting labeled EV populations in complex biological samples.
Does Envision require calibration?
No. Envision uses a physics-based, absolute measurement approach that does not require calibration standards for accurate size or concentration data.
What standards does Envision comply with?
Envision supports Nanoparticle Tracking Analysis per ISO 19430:2024 and ASTM E2834-12.
What warranty and support come with Envision?
Envision includes a 3-year warranty on the laser and a 2-year warranty on all other parts (excluding the sample cell and tubing), along with free technical support during the warranty period and optional maintenance, service, and IQ/OQ/PQ contracts.
How is Envision different from other NTA instruments?
Envision’s light-sheet optical design, adjustable laser power, and sealed pump-driven fluidics extend its lower detection limit and fluorescence observation time beyond what many conventional NTA platforms achieve.
Can I see Envision measure my specific sample type before purchasing?
Yes, request a demo and our team can arrange a live or application-specific demonstration relevant to your sample type.
Related Resources and Internal Links
- Nanoparticle Tracking Analysis: The Complete Guide — NTA fundamentals and how the technique works
- Comparing NTA & DLS — full technical comparison
- Nanoparticle Characterization — how NTA fits alongside other characterization methods