BT-90 Nano Laser Particle Size Analyzer

 Brief introduction

   BT-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.

 

Main Specification

#	Item	Specification	#	Item	Specification
1	Measuring Range	1-9500nm (in connection with sample)	6	Laser Source	20mW, 635nm, Solid Laser
2	Concentration Range	0.1-100mg/ml (in connection with sample)	7	Scattering Angle	90oC
3	Cell Volume	0.5ml and 8ml	8	Detector	PMT(Photomultiplier)
4	Analysis Mode	NNSL, multi-peak and CONTIN	9	Correlator	Physical channels:200 , Dynamic sampling time and delay time:1-5us
5	Temperature Control Range of the Cell	15 - 90oC	10	Size and Weight	45 x 305 x 210 (mm), 15kg

 

Application fields

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.

 

Good accuracy

Reasons for good accuracy:

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

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.

 

 

Dandong Bettersize Instruments Ltd. is a private high-tech enterprise specializing in the research, manufacture and service of particle size analyzers. We were established in 1995, and now staff more than 100 people, among whom engineers take up more than 50%. We have 1 comprehensive office and 4 departments, including R&D Dept., Production Dept., Sales Dept. and International Dept. In addition, we have marketing offices in Canton and Shanghai, with sales agencies in Korea and Taiwan area. Our products have been sold to different places in 26 provinces, municipalities and autonomous regions in China, and are also exported to the worldwide market. We have occupied more than 20% of Chinese market. Now there are more than 900 Bettersize-made particle size analyzers operating smoothly around the world. With years of influence and good reputation in this sector, Bettersize has become a member enterprise of Chinese Society of Particuology.

Concerning Laser Particle Size Analyzer and Sedimentation Analyzer, typical products of us, we have two series divided into six types. Laser particle size analyzers include BT-9300H, BT-9300S, BT-2001LD, BT-2002; sedimentation particle size analyzers include BT-1500. Besides, we have BT-1600 Image Particle Analyzer and BT-1000 Powder Integrative Characteristic Tester. The principal performance of H and S meet requirement of most customers, in addition, both have high quality and low breakdown rate at moderate price.

We have our own R&D team in software development and design of IC, optics and mechanics. They possess specialized knowledge and years' of experience in particle size analyzer. We have developed advanced products yearly. Our quality control system is performed throughout the whole production, including processing of spare parts and accessories, purchase, examination, installation, test after connection, storage, packing and transportation. We have passed ISO9000 quality system certification.

On service, we have a concept of "Service, need of manufacturer actually". We make it better by: establishing customer files; specialized engineer perform installation, commissioning, training and after-sales service; full-time clerk communication with customers regularly by phone or Internet; full-time clerk in charge of the supply of spare parts and accessories.

We have made great success through years of efforts. Our customers includes scores of well-known universities, such as Tsinghua University, Harbin University of Industry, China Mining University, Shanghai Tong'ji University, Beijing Chemistry & Industry University, Hubei University and Zengzhou University; scores of well-known research institutes, such as China Science Institute including Shenyang Metal Research Institute, Shanghai Silicate Research Institute, Dynamics Research Institute and Dalian Chemistry & Physics Research Institute. Our particle size analyzer has actually become a standard particle size analyzer in domestic production and application of coal series kaolin and spherical aluminium powder.

Over these years, our products have been not only sold in different regions in China, but also exported to a large number of places all over the world, such as Japan, Korea, Thailand, Malaysia, Indonesia, Turkey, Syria, India, Pakistan, the USA, the UK and Canada, well received by all customers.

We have become a specialized and prestigious manufacturer of particle size analyzers.

Quality is vital to a company of dignity and honor. To achieve the long term goal of making competitive laser particle size analyzers and creating a famous global brand, Bettersize has established a complete and rigorous quality management system and a scientific and standardized manufacturing process, including designated and nominated purchasing, operating instructions according to working procedures, and 100% inspection for all components, assemblies, assembling processes, and finished products.