Introduction of Nanoptic 90
Nanoptic 90 dynamic light scattering nano particle size analyzer is a research result of South China Normal University which introduced by Bettersize Instruments Ltd. It is a project of industrialization implemented by both sides. This instrument adopts dynamic light scattering theory. When laser beam irradiates nano particles, pulsate scattered light signals will be occurred. Rate-of-changes of signal intensity and frequency are related to motion state (speed and amplitude) of particles and motion state is related to particle size. Hence, photomultiplier is used to receive these pulsate signals of scattered light, and these signals will be processed by digital correlator so as to recognize effective light scattering signals. Through inversion processing of special software, particle size of particles in nanometer as well as its distribution will be calculated by Stokes－Einstein formula. The instrument can test wide distribution samples in nanometer, which has the characteristics of easy operation, high precision and wide test range, etc. It applies to the fields of production, scientific research and teaching of nanometer materials.
Application fields of Nanoptic 90
Nano metallic oxide, Nano metallic powder, Nano ceramic material, protein, polymer latex, preparation of pharmaceutical, water/oil emulsion, paint, coating material, pigment, ink, toner, cosmetics and other fields of research, preparation and application of nano material, etc.
Accuracy
Excellent accuracy is achieved thanks to:
-Laser, detector and signal transmission system are stable and reliable.
-Has precision temperature control system: precision of temperature control can reach 0.5°C to ensure that test result is accurate and reliable.
-High precision photomultiplier (PMT): adopts imported PMT of small dark base, high sensitivity, fast speed and stable performance, could recognize each photon precisely.
-High-performance photon correlator: adopts photon correlator invented by large scale integrated circuit(DSP) which has more channels and fast speed, can recognize photon signals produced by particles of all kinds of particle size effectively.
Examples for accuracy verification:
a) Test result for 100nm standard sample is 101nm, and error range is 1%, much lower than 10% which is allowable range required by International Standard ISO13321.
b) Test result for 27.33nm standard sample is 27.57 nm and error range is 0.87%. Test result for 62.11nm standard sample is 61.55nm and error range is 0.9%. Both of them are much lower than 10% which is allowable range required by international standard ISO13321.
c) Compare with test results of overseas advanced nanoparticle size analyzer: Good consistency.
| Mean Diameter(nm) | 1# | 2# | 3# | 4# |
| Nano90 | 130.0 | 113.8 | 31.13 | 107.5 |
| Nanoptic 90 | 130 | 116 | 30.5 | 109 |
Reliable performance and easy operation
Reliable performance is achieved thanks to:
- Use of high quality components.
- Components are inspected and recorded for traceability. A 48-hour failure test before instruments leaves the factory.
- Use of advanced technologies such as dry burning-resistant ultrasonic, auto alignment, dew-point temperature detecting and others
- Comply with CE, FDA 21 CFR Part 11 and ISO 9001-2008 certification.
Easy operation: Auto temperature control, photon number detection, real-time observing changes of particle size, conversion of report format, etc. The software adopts instructor-led operation procedures to instruct users how to conduct operation procedures correctly so as to reduce test error due to mistaken operating. Meanwhile, users are familiar with operation methods of the instrument quickly and very convenient.
Unique technology for reliable quality
Automatic temperature control technology: has precise temperature control system. Precision of temperature control could reach 0.5°C. Adjust cell temperature to make the viscosity of the medium will not be changed due to temperature variation, so Brownian motion of particles will not be affected and it ensures that test result is accurate and reliable
High-performance photon correlator:
adopts photon correlator invented by large scale integrated circuit(DSP) which has more channels and fast speed, can recognize photon signals produced by particles of all kinds of particle size effectively.
Powerful software system:
Friendly interface, easy operation, animation display. It has multiple-language function which can exchange 17 languages easily; result report can be changed to the format of Excel, Word or Graph; report format can be edited randomly and user information can be added easily and there are 12 languages are optional including Chinese, English, etc.
Examples for report 
Specification
| General | Nanoptic 90 |
| Theory | Dynamic light scattering |
| Size | |
| Size range | 1-9500nm (in connection with sample) |
| Accuracy | ≤1% (GBRM D50) |
| Analysis Mode | NNSL, multi-peak and CONTIN |
| Temperature control range of cell | 15℃-90℃ |
| Optics | |
| Red light | 20 mW, 635nm, solid laser |
| Detector Type | PMT(Photomultiplier) |
| Scattering angle | 90° |
| Correlator | Physical channels:1000 pcs
(Dynamic sampling time and delay time:1-5uS) |
| System | |
| Dispersion type | Wet |
| Concentration range | 0.1-100mg/ml (in connection with sample) |
| Cell volume | 4 ml and 1 ml |
| Supply voltage | 220VAC, 50/60Hz |
| Dimension | 490*310*230(mm) |
| Weight | 14kg |
| Computer specification | |
| Computer interface | USB2.0 or USB3.0 |
| Operation system | Windows XP, Windows 7,8 or 10 |