Microtrac’s NANOTRAC Wave II / Zeta is a highly flexible Dynamic Light Scattering (DLS) analyzer which provides information on particle size, zeta potential, concentration, and molecular weight. It allows faster measurements with reliable technology, higher precision, and better accuracy. All of this combined into a compact DLS analyzer with a revolutionary fixed optical probe.
With the unique and flexible probe design and the use of the Laser Amplified Detection method in the NANOTRAC Wave II / Zeta, the user is able to choose from a wide array of measurement cells that satisfy the needs of any application. This design also allows measurements of samples over a wide concentration range, monomodal or multimodal samples, all without prior knowledge of the particle size distribution. This is made possible through the use of the Frequency Power Spectrum (FPS) method instead of classical Photon Correlation Spectroscopy (PCS).
Nanoparticle Size Analyzer NANOTRAC WAVE II
- 180° backscatter DLS setup
- Stable fixed optics sample interface – no adjustments required
- Rapid field reversal prevents electro-osmosis
- Robust mobility calculation as a function of power spectrum ratio
- High concentration zeta potential measurements
- Sample concentration and molecular weight determination
- Universal solvent compatibility
- Frequence Power Spectrum calculation model instead of PCS
- Laser Amplified Detection – high signal to noise ratio
Nanoparticle Size Analyzer NANOTRAC WAVE II / ZETA Accurate Measurement of Colloidal Systems
All NANOTRAC WAVE series analyzers use the same revolutionary probe technology for DLS measurements. Utilizing our Laser Amplified Detection method, repeatable and stable particle size measurements for all types of materials are provided.
The NANOTRAC WAVE II series can also calculate the sample concentration through the use of the power spectrum and the resulting loading index. Depending on the distribution calculation, concentration will be displayed in appropriate units such as cm3/ml or N/ml. It is also possible to calculate the molecular weight by either the hydrodynamic radius or a Debye plot.
The NANOTRAC WAVE II particle analyzer has multiple reusable samples cells in different sizes. There is a standard and micro volume Teflon cell for a wide range of materials. For more difficult to clean samples, there is a standard volume stainless steel cell, as well as a large volume stainless steel cell.
The NANOTRAC WAVE II Zeta particle analyzer has a special reusable zeta cell with an electrode for running zeta potential measurements. Sample cells listed for the Wave II are also compatible with the zeta model.
Nanoparticle Size Analyzer NANOTRAC WAVE II / ZETA Ideal for Nanoparticle & Zeta Potential Analysis
The measurement of zeta potential in the NANOTRAC WAVE II particle size analyzer takes advantage of the same Frequency Power Spectrum methodology used for measuring nanoparticle size distributions. The same stable optics sample interface means no adjustments are required. The backscatter and laser amplified detection signals are collected as in the size measurement, and the rapid sequencing of applied electric fields prevents electroosmosis. The optical probe surface is coated to provide electrical contact with the sample. Two probes are used, one to determine the polarity of the particle charge at the slipping plane and one to measure the mobility of the particles in an electric field. Polarity is measured in a pulsed electric field, while mobility is measured in a high frequency sine wave electric field excitation. The zeta cell has two detection probes, on opposite sides, to detect polarity and mobility.
From the linear frequency power spectrum distribution (PSD), the Loading Index (LI), which is proportional to particle concentration, can be calculated. Loading Index values provide a single number for total scattering that can be used to determine particle mobility in microns / sec / volt / cm and particle polarity as + / -, positive or negative.
Measuring mobility and zeta potential begins by measuring the PSD and determining the LI with the excitation off. Then the PSD is measured with the high frequency sine wave on and a ratio is taken. Polarity is determined by measuring the LI before and after pulsed DC excitation. A ratio of LI after the excitation divided by LI before excitation of less than one is a positive polarity (concentration decreasing) and a ratio greater than one is negative (concentration increasing) for a positively charged probe surface.
Mobility = C x (ratio of [PSD(on) – PSD(off)] / LI(off)
Zeta Potential ∝ Mobility
Nanoparticle Size Analyzer NANOTRAC FLEX Typical Applications
The STABINO ZETA is a highly versatile solution for rapid and reliable zeta potential and stability analyses. Designed to meet the demands of modern industries, it empowers users to optimize performance across a wide range of applications, including inks and pigments, ceramics, food and beverages, colloidal systems, polymers, microemulsions, cosmetics, battery slurries, chemicals, and carbon materials. Whether improving product quality, accelerating development, or ensuring process consistency, the STABINO ZETA delivers fast, actionable insights where they matter most.
pharmaceuticals
- pharmaceuticals
- inks
- life sciences
- ceramics
- beverages & food
emulsions
- colloids
- polymers
- microemulsions
- cosmetics
- chemicals
steel
- environment
- adhesives
- metals
- industrial minerals
... and many more!
To find the best solution for your particle characterization needs, visit our application database
Intuitive Use With Just a Few Clicks DIMENSIONS LS for NANOTRAC Series
The DIMENSIONS LS software comprises five clearly structured Workspaces for easy method development and operation of the NANOTRAC instrument. Results display and evaluation of multiple analyses are possible in the corresponding workspaces, even during ongoing measurements.
- Simple method development
- Clearly structured result presentation
- Various evaluation options
- Intuitive workflow
- Extensive data export
- Multi-user capability
Nanoparticle Size Analyzer NANOTRAC WAVE II Technical Data
| Method | Backscattered laser-amplified scattering reference method |
|---|---|
| Calculation model | FFT power spectrum |
| Measurement angle | 180° |
| Measuring range | 0.3 nm - 10 µm |
| Sample cell | Various sample cell options |
| Zeta potential analysis | yes |
| Zeta potential analysis | yes |
| Zeta measurement range (potential) | -200 mV - +200 mV |
| Zeta measurement range (size) | 10 nm - 20 µm |
| Electrophoretic mobility | 0 - 15 (µm/s) / (V/cm) |
| Conductivity measurement | yes |
| Conductivity range | 0 - 10 mS / cm |
| Molecular weight measurement | yes |
| Molecular weight range | <300 Da -> 20 x 10^6 Da |
| Temperature range | +4°C - +90°C |
| Temperature accuracy | ± 0.1°C |
| Temperature control | yes |
| Temperature control range | +4°C - +90°C |
| Titration | yes |
| Reproducibility (size) | =< 1% |
| Reproducibility (zeta) | + / - 3% |
| Sample volume size measurement | 50 µl - 3 ml |
| Sample volume zeta measurement | 150 µl - 2 ml |
| Concentration measurement | yes |
| Sample concentration | up to 40 % (sample dependent) |
| Carrier fluids | Water, polar and unpolar organic solvents, acid and base |
| Laser | 780 nm, 3 mW; 2 laser diodes with zeta |
| Humidity | 90 % non-condensing |
| Dimensions (W x H x D) | 355 x 381 x 330 mm |
Nanoparticle Size Analyzer NANOTRAC WAVE II Downloads
NANOTRAC Series
Product data sheet Nanotrac Wave II
Product Overview
