Overview

WDet-5000UVI is the first full-spectrum (200-800nm) immersion UV water analyzer at home. With features of the delicate and convenient structure, plug and play, auto cleaning function, it can be widely applied to measure indexes including COD, BOD, and turbidity in surface water, underground water, and municipal sewage.

Technical Principle Of WDet-5000UVI Immersion UV Water Analyzer

The portable water quality analyser adopts a pulse xenon lamp as the light source and ultraviolet spectrometer as a detector, which can collect the absorption spectrum of water pollution between 200nm and 800nm in real time. The water pollutant content can be analyzed in real time through the chemometrics algorithm technology. The optical path is shown as the following figure.

The spectral probe can record a complete spectrum between 200nm to 800nm (UV-visible light) and distinguish the spectrum into 256 wavelengths to obtain "Spectral fingerprint". It can monitor multiple parameters simultaneously through the information contained in spectral fingerprint and compensate those parameters aiming at possible cross-sensitivity. The relevance between measuring result and laboratory result achieves high quality that simple optical instrument can never obtain before.

Features Of WDet-5000UVI Immersion UV Water Analyzer

Adopt a full spectrum (200-800nm) (UV-visible light) measurement technology and chemometrics algorithm. Compared with dual wavelength background deduction technology, it can measure more parameters and be less affected by composition change of sewage.

Use high-pressure gas to clean probe automatically, or employ immersion electrical brush to clean.

Not required for reagent preparation; save operating cost and no secondary pollution.

Fast response time(about 2s), applied to occasions with high requirements for real-time.

Without interference by chloride.

Technical Specification Of WDet-5000UVI Immersion UV Water Analyzer

Nanoptic 90 is a nanoparticle analyzer based on the well-known technique of dynamic light scattering (DLS). Nanoptic 90 can measure nano materials with size down to 1nm. The high-power long lifetime laser and high sensitivity PMT provide Nanoptic 90 the ability to demonstrate rapid and accurate testing results.

Measurement: Particle size

Particle size range: 1 to 9500nm

Dispersion type: Wet

Technology: Dynamic Light Scattering (DLS)

Features and Benefits

Fast analysis: less than 5 minutes per test.

Small quantity of sample required: 4ml and 1ml sample cell.

High-precision temperature control system provides accuracy of ±0.5°C.

Repeatability: ≤1% (GBRM D50)

Accuracy: ≤1% (GBRM D50)

Scattering angle: 90°

Dynamic light scattering (DLS)

Detector: PMT (Photomultiplier)

As the leading laser particle size analyser manufacturer in China in terms of brand reputation, sales volume and, most importantly, qualities, Bettersize spare no efforts on R&D each year.

Dynamic light scattering (DLS), also known as photon correlation spectroscopy (PCS), is a commonly used characterization method for nanoparticles. DLS particle size analyzer has the advantages of accuracy, rapidity, and good repeatability.

With the update of the instrument and the development of data processing technology, the current dynamic light scattering instrument not only has the function of measuring particle size, but also has the ability to measure Zeta potential and molecular weight of large molecules.

The principle of DLS of dynamic light scattering is that nano-particles, emulsion droplets and molecules in suspension are also moving in a similar way under the collision of Brownian motion of liquid molecules. When a laser strikes these dynamic particles or molecules, these moving particles cause a fluctuation in the intensity of the scattered light, and the frequency of the fluctuation depends on the velocity of the particle, which depends on the size of the particle (because the smaller the particle size, the faster it moves under the impact of the particle Brownian motion).

Therefore, the velocity of particle Brownian motion will be obtained by analyzing the intensity fluctuation of scattered light, and the particle size and particle size distribution of nanoparticle can be obtained by using Stokes-Einstein equation.

As the leading particle analyser manufacturer in China in terms of brand reputation, sales volume and, most importantly, qualities, Bettersize spare no efforts on R&D each year.

Laser Particle Size Analyzer, Laser Granulometry

Bettersizer ST laser scattering particle size distribution analyzer includes the patented Dual Lens Optical System (DLOS) which provides a compact design without resorting to folding optics that are susceptible to misalignment caused by vibrations often present in most industrial labs. 

The ST Laser Granulometry incorporates 86 high-speed detectors, which produces the high-resolution data from 0.1 to 1000 microns. This high-speed detector system delivers fast results, often in as little as 15 seconds. 

• Measurement: Particle size
• Particle size range: 0.1 to 1000µm
• Dispersion type: Wet
• Technology: Laser diffraction

Features and Benefits

•Dual Lens Optical System (DLOS):
The Dual Lens Optical System (DLOS) is a technical innovation developed by Bettersize. It detects both the forward and backscatter laser diffraction pattern. This breakthrough technology results in increased particle size measurement range without the added cost of a second light source. This single laser particle size analyser provides for higher accuracy due to a consistent wavelength throughout the full measurement range.

•Standard Operation Procedure (SOP):
The Bettersize software offers an intuitive user interface.  The “Auto Test” function fully automates the entire test sequence.  With one mouse click, “Auto Test” initiates auto-alignment, collects a background, prompts the operator to add sample and analyzes the sample.  

•Compact design:
The rugged and compact design, coupled with the low cost of ownership of the Bettersizer ST makes it the ideal laser particle size analyzer for your quality control applications.

•Auto Alignment Function:
The auto alignment function of Bettersize ST provides accurate and repeatable testing results.  The high speed servo motors allow the Bettersize ST to perform an auto alignment prior to every test. 

 

 

 

Image Particle Size and Particle Shape Analyzer