Model NumberDLS90

Brand NameGUANGZHOUBEITUO

Payment TermsT/T, paypal

DLS90 nanometer particle size analyzer
Introduction
DLS90 is a nanoparticle particle size characterization instrument based on the principle of dynamic light scattering. Particles dispersed in a liquid undergo irregular Brownian motion due to impact by thermal motion of liquid molecules. Under the same environment, the smaller the particle size, the more intense the Brownian motion, and the more obvious the diffusion behavior of the corresponding particles. When a laser beam hits these particles, the intensity of the scattered light changes randomly due to the Brownian motion of the particles, and the speed of the change is related to the speed of the Brownian motion of the particles. The specific photon correlator can directly measure the change speed of the scattered light intensity, and then the diffusion coefficient of the Brownian motion of the particle can be known. Then the particle size and particle size distribution of the particle can be calculated by using the Stokes-Einstein formula. Dynamic light scattering technology is a nanoparticle particle size measurement technology recommended by the International Organization for Standardization (ISO). Compared with other technologies, it has significant advantages in measurement principle. It is an internationally accepted nanoparticle particle size measurement method. 
Features
1. High-precision photomultiplier tube with photon counting level. Low dark count, fiber coupling, high speed, high stability.
2. Adopt integrated photon correlator. FPGA-based photon correlator, integrated dual-channel photon counter to ensure no photon leakage; 1000 physical channels to provide sufficient measurement data; minimum 100ns sampling time to ensure measurement of minimum 1nm particles; integrated chip design within the chip to ensure high speed, A stable data processing flow.
3. Precise temperature control system. The high-precision temperature control system based on PWM has an accuracy of 0.5 °C to ensure accurate measurement. 
Technical Parameters
Measuring range: 0.7nm-10um
Accuracy: better than ±2%
Repeatability: better than ±2%
Sample cell volume: 4ml
Sample cell temperature control range: 15~50°C
Scattering angle: 90°
Laser source: solid state laser (20mw/650nm)
Detector: photon counting level photomultiplier
Correlator: 1000 channels, minimum 100ns sampling time
Computer interface: USB2.0 or above
Voltage: AC220V, 50/60Hz
Environmental requirements: temperature 5~80 °C, humidity 0~90%, no condensation
Instrument volume: 440 × 360 × 210mm
Instrument weight: ~20Kg