Hot sales NS-90 Nanometer Particle Size Analyser in china  

Purpose: NS-90 nanoparticle size analyzer is a cost-effective characterization technology for nanoparticles. It is suitable for applications requiring high sensitivity of particle size measurement or using the same results as 90 degree scattering angle system. This machine is suitable for the analysis of emulsion, suspension, protein and other samples.

Product introduction:
NS-90 nanometer particle size analyzer is a leading nanometer particle size analyzer specially developed by zhengzhoiu nanbei Instruments Company after the successful launch of TopSizer high-performance laser particle size analyzer in 2014. It continues to introduce and absorb the advanced particle characterization technology of Malvern Panalytical Company and combines the market application characteristics and needs of Chinese users. The instrument uses 90 degree dynamic light scattering technology to measure particle and molecular size, and static light scattering method to measure the molecular weight of protein and polymer; in many domestic brands, it is exclusively equipped with avalanche photodiode (APD) detector, which is much more sensitive than photomultiplier tube detector (PMT); it uses high-end He-Ne gas laser, coupled with precise internal temperature control technology, and is compact. Closed-light path and advanced software algorithm ensure data repeatability, accuracy and 0.3 nanometer test lower limit; at the same time support SOP standard operation, as well as intelligent evaluation of measurement data, convenient for users to use.

Working principle:
Dynamic light scattering technology:
NS-90 nanoparticle size analyzer uses dynamic light scattering technology to measure particle size and molecular size.
Random Brownian motion of particles in liquids is produced by collision of solvent molecules around them. Small particles move faster in liquid than large particles. This movement has been going on all the time, so after we take a "picture" of the sample motion at a short interval, we can see how much the particle moves and calculate how big it is. In the same time, if the displacement is small and the particle position is close, the particle size in the sample is larger; on the contrary, if the displacement is large and the particle position changes greatly, the particle size in the sample is smaller. Dynamic light scattering (DLS) technique, also known as photon correlation spectroscopy (PCS), is used to measure particle size by using the relationship between diffusion velocity and particle size.


NS-90  nanometer particle  size analyzer  uses  90ºC   dynamic light  scattering  technology, utilizes
photoelectric  detector  to  measure  the  scattering  light  intensity  fluctuation  signal  generated   by
Brownian motion of particles in the sample, then obtains the Correlation Function through the digital
correlator, finally  use Stokes  Einstein equation to  calculate the  particle size and  distribution. The
particle size measured by this technology is the diameter of hard sphere diffused at the same speed as
the measured particle.


Static light scattering technology:

NS-90 nanoparticle size analyzer uses static light scattering (SLS) technology to measure the molecular weight of proteins and polymers.
Static light scattering is a non-invasive technique for characterizing molecules in solution.
Similar to dynamic light scattering, when laser irradiates particles in the sample, the particles scatter in all directions. But unlike dynamic light scattering technology, static light scattering technology is used to measure the time average intensity of scattered light over a period of time. Because this time average light intensity can not reflect the dynamic change of signal with time, it is called "static light scattering".
As the scattering light intensity produced by particles is proportional to the square of the average molecular weight and the concentration of particles, the molecular weight of protein and polymer can be determined by static light scattering method. In this measurement method, the scattering light intensity (kC/R) of a series of samples with different concentrations is measured and compared with the scattering light intensity produced by standard substances (such as toluene) to obtain Debye Plot. The slope of the fitting line in the Debye diagram is the second Virial Coefficient (A2), and the value of the fitting line extending to zero concentration is the reciprocal of the average molecular weight (1/MW). The molecular weight unit is Dalton or g/mol.
Purpose:
NS-90 nanoparticle size analyzer is a very cost-effective characterization technology for nanoparticles. It  suitable for applications requiring high sensitivity of particle size measurement or the same results as 90 degree scattering angle system. The instrument is suitable for the analysis of emulsion, suspension, protein and other samples.

Typical applications:

Chemical products: silica gel, latex, metal colloid, pigment, ink, toner, ceramics
Cosmetics, glazing agents, food and agricultural chemicals and other products in the form of emulsion (emulsion).
Pharmaceutical industry: granularity of fat emulsion, injection, microcapsule, monoclonal antibody and immunoglobulin
Measurement of Protein and Polymer Size.

Performance characteristics:

[Advanced Optical System Design]

The Euro-American KeNS-90 nanoparticle size analyzer integrates dynamic light scattering technology and static light scattering technology in an instrument. Dynamic light scattering method is used to measure particle size and molecular size, while static light scattering method is used to determine the molecular weight of protein and polymer. This technology requires the stability of the whole system, and every design element must be optimized to ensure high accuracy and repeatability.
NS-90 is designed with closed optical path to prevent pollution. The algorithm uses the Mie Theory.
Functional Software Optimizes User Experience
Standard operating procedures (SOP) are provided to simplify routine measurements; to automatically adjust the optimal settings of various samples; to operate simply, without collimation, correction or maintenance; and to be intelligent, to automatically determine the quality of data reports.

[High Performance Detector]
The sensitivity of an avalanche photodiode (APD) detector with high efficiency is much higher than that of a photomultiplier tube (PMT). The cost is high but the optimal test performance is guaranteed.

[Research-level digital correlator]
Using high-speed digital correlator, 4000 channels, sampling time is as low as 25 ns.

[Stable laser source and optical system]
A highly stable He-Ne gas laser is used to ensure the repeatability of the data, with a wavelength of 633 nm and a power of 4 mW. Fifty mW, 532 nm solid-state lasers can also be used for samples that can not be detected by standard 633 nm lasers. The laser attenuator can be automatically adjusted in the dynamic range of 300000:1.
[Accurate internal temperature control system]
Independent circulating temperature control tank can be set arbitrarily in the range of 0 - 90 C. Its control accuracy reaches 0.1 C, which ensures high repeatability. It can also be equipped with a temperature control tank of 120 C.

Software functions:
1. Using advanced software technology and interface, the operation is simple.
2. Fully automatic setup and measurement: Instruments can be set up with the simplest training, including sample pool location, data recording, analysis and results.
3. Support SOP standard operating procedures to ensure consistency and data repeatability.
4. Complete evaluation of measurement data: The instrument software can automatically judge the quality of data report according to test conditions.
5. Printing or screen displaying reports is easy to use; with report designer, you can customize different reports according to different needs by selecting graphics and input parameters at the designated location.
6. Sample data and results are stored in the measurement file for easy data comparison.
7. Data analysis: Data are given in the form of graphs or tables. Distribution algorithm is suitable for various samples including monodisperse samples, wide-distributed samples and multi-mode samples. Support:
Temperature Trend Analysis
- Time Trend Analysis
Trend analysis of selected parameters
- Full Range Statistical Map.

FAQ     
1. How can I choose the suitable one?
Dear customer, please tell us your detailed requirements by mail or online, we will recommend the suitable one as your request.
2. Does your price is competitive?
Dear customer, we make sure to offer you the best quality with competitive price.
3. How can I pay?
Dear customer, we accept many payment term, such as T/T, Western Union…
4. When I receive it after pay?
Dear customer, normal models can be delivered with 5-7days, please contact us to check transport time to your address.
5. How to deliver?
Dear customer, we can send by Express, by Sea and by Air.
6. Is will be broken during transport?
Dear customer, please do not worry, we do standard export package.
7. What should I do if I do not know how to use?
Dear customer, please do not worry, manual user will be sent together, you can also contact us with more technological support.
8. What should I do if some parts broken?
Dear customer, please do not worry, we have 12months warranty except  wear parts. You can also buy parts from us after 12months.

Pre-sale service
· 24hours online to ensure quick response to customers' inquiry or online message;
· Guide customers to choose the best suitable machine model;
· Offer detailed specification and competitive prices;
Contract execution
· Machine production will be arranged strictly according to the contract;
· Machine photos will be sent to you for inspection during production;
· Send customs clearance documents by DHL;
· Update latest news after delivery and prepare customs clearance;
After-sale service
· 12 months warranty except for wear parts;
· Broken spare parts (except for wear parts) will be sent for free due to quality problems;
· In time response to customers technical problems;
· New products update for customers' reference

Our Company:
Since 2008, We have become a professional laboratory instrument manufacturer.
Since the establishment of the International Department in 2010, the products are exported to Europe, America and Asia and Africa!
Whether it is technology, factory area, multi-language sales. We are all professional!


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Certification:
Our products have international certifications such as SGS, CE, ISO!

Warranty And After-sale Service
♥♥We Supply 1 Year Warranty , And Lifelong Free Technical Guiding And Training♥♥