Product Details

DLS-802 Dynamic Light Scattering Particle Analyzer Working Principle

DLS-802 nanometer particle size analyzer is based on the Dynamic Light Scattering principle, the first manufacturer used digital correlator in China. It was upgraded from DLS-801 which is the first set of nanometer particle size analyzer in China.

Based on Brownian motion principle, the small particles cause the intensity to fluctuate more rapidly than the large ones. It adopts great performance of Japan HAMAMATSU photomultiplier and self-developed high speed digital correlator as core parts, get diffusion coefficient by test scattering light change in some angles, and calculate particle diameter and distribution according to stokes-Einstein equation. the machine is with characters of fast calculation, high resolution ration, good accuracy, and repeatability, therefore it’s widely used in factory production labs, researching institutes and universities.

DLS-802 Dynamic Light Scattering Particle Analyzer Features

1. Advanced test principle

Dynamic light scattering principle and photon correlation spectrum technology, according to Brownian motion speed of particle to test particle size, different size of particles have different speed, when laser illuminate these particles, it will make scattering light happen different speed of fluctuations- downs.

Photo correlation spectrum method will analyze these particle size according to Photon fluctuations -downs in particular direction.

2. High resolution

Using PCR technology test nanometer-scale particle size, must be able to distinguish nanosecond signal fluctuations. The core components of the instrument are CR256 digital correlator developed by our company, with 8ns high resolution speed.

3. High sensitivity and Noise-signal ratio

Detector is composed of imported HAMAMATSU photomultiplier, ensure good accuracy.

4. High speed data collection and calculation

Self-developed patent product-CR256 digital correlation, it can finish dynamic scattering light intensity collection and autocorrelative function by real time calculation. Data processing speed is up to 162M, effectively reflect dynamic scattering light information of different sizes of particles.

5. High stable optical path system

Photon correlation spectrum detect system adopt optical-fiber technology, with smaller size and high anti-interference and reliability.

6. High precision constant temperature control system

Semiconductor temperature control technology, precision control within ±0.1℃，make samples be in a constant state throughout the testing process, prevent testing error because temperature change will change liquid viscosity and Brownian movement speed.

dynamic light scattering working principle

DLS-802 Dynamic Light Scattering Particle Analyzer Specifications

Model		DLS-802
Standards		GB/T 19627-2005/ ISO 13321:1996 GB/T 29022-2012/ ISO 22412:2008
Measure Range		1nm - 10000nm
Concentration Range		0.1mg/ml - 100mg/ml
Accuracy Error		<1% (CRM D50)
Repeatability Error		<1% (CRM D50)
Data Output		D10-D100, D [4,3], D [3,2], D [2,1], D [1,0]
Light Source		Semiconductor laser λ= 532nm P=30mW
Detector		Imported Japan HAMAMATSU photo-multiplier (19-90℃)
Scattering Angle		90
Sample Cuvette		1-4mL
Test Temperature		5-40 ℃ (temperature controller 5-90℃, precision within 0.1℃)
Test Speed		<5 Min
Power Supply		220V, 50Hz/ 60Hz
Outer Dimension		L48cm x W27cm x H17cm
Gross Weight		12 Kgs
Operation System		Win XP/ Win 7/ Win 10, 64 bits, USB port: 2.0 /3.0
Analysis		Average particle diameter, particle distribution, photon counting rate etc.
Analysis Modes		NNSL, multi-peak and CONTIN
Digital Correlator	Model	CR256
	Auto-correlation Channels	256
	Baseline Channel	4
	Physical Channels	5000
	Unit Delay Time	100ns-10ms

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