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Shanghai Zhongchen Digital Technology Equipment Co., Ltd

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JS94 series microelectrophoresis (zeta potential analyzer)

NegotiableUpdate on 04/20

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Overview

The microelectrophoresis (Zeta potential meter) developed and produced by Shanghai Zhongchen Digital Technology Equipment Co., Ltd. has been available for 24 years and is a project supported by the Innovation Fund without compensation. This instrument can be used to determine the solid-liquid interfacial electrical properties (zeta potential) of dispersed system particles, as well as to measure the interfacial electrical properties of emulsion droplets. It can also be used to determine the isoelectric point and study the mechanism of interfacial reaction processes. Measuring the Zeta potential of particles to determine their isoelectric point is an important method for understanding the surface electrical properties of particles, and it is also an important means in particle surface treatment. Compared with other similar instruments at home and abroad, it has significant * performance.

Product Details

JS94 series microelectrophoresis (Zeta potential analyzer)Detailed information:

The microelectrophoresis (Zeta potential meter) developed and produced by Shanghai Zhongchen Digital Technology Equipment Co., Ltd. has been available for 26 years and is a project supported by the Innovation Fund without compensation.This instrument can be used to determine the solid-liquid interfacial electrical properties (zeta potential) of dispersed system particles, as well as to measure the interfacial electrical properties of emulsion droplets. It can also be used to determine the isoelectric point and study the mechanism of interfacial reaction processes. Measuring the Zeta potential of particles to determine their isoelectric point is an important method for understanding the surface electrical properties of particles, and it is also an important means in particle surface treatment. Compared with other similar instruments at home and abroad, it has significant * performance. It can be widely used in industries such as cosmetics, mineral processing, papermaking, medical and health care, building materials, ultrafine materials, environmental protection, marine chemistry, etc. It is also one of the important teaching instruments for majors such as chemistry, chemical engineering, medicine, and building materials.

The first standard for zeta potential analysis electrophoresis of colloidal particles, GB/T 32668-2016, was released and implemented on November 1, 2016. The microelectrophoresis method is based on the JS94 series microelectrophoresis instrument (zeta potential instrument) developed and independently produced by Shanghai Zhongchen Digital Technology Equipment Co., Ltd. The software interface of the JS94 series microelectrophoresis instrument (zeta potential instrument) is shown in the image on page 16 of the standard.

JS94H

JS94Main models of series microelectrophoresis (zeta potential analyzer) (Table 1)
model	Applicable system	Main particle size range (Microns)	Microscopic optical system	resolution	price including tax (Chinese Yuan)
JS94H	Water-based system	0.5~20	High magnification microscopic optical system	4pixel/μm	50000+4000
JS94H2	Water based and organic systems	0.5~20	High magnification microscopic optical system	4pixel/μm	61200+4000
JS94J	Water-based system	0.1~10	Japan WKD High magnification microscopic optical system	12pixel/μm	68200+4000
JS94J2	Water based and organic systems	0.1~10	Japan WKD High magnification microscopic optical system	12pixel/μm	79500+4000
JS94K	Water-based system	0.2~50	Japanese continuous zoom optical system, suitable for measuring a wider range of particles	8pixel/μm	81800+4000
JS94K2	Water based and organic systems	0.2~50	Japanese continuous zoom optical system, suitable for measuring a wider range of particles	8pixel/μm	94000+4000

Note 1: The above prices include the supporting computer, instrument host, experimental operation software, standard components of the instrument, free on-site installation and debugging training in major cities in mainland China, one-year warranty service and lifelong maintenance, software * upgrades, and tax shipping.

1、 JS94 series microelectrophoresis (Zeta potential meter) standard components

1、 1 USB standard digital CCD

21 silver electrode

31 platinum electrode

4、 1 POM electrode (only JS94H2, JS94J2, JS94K2)

510 electrophoresis cups

61 meter mark

71 set of electronic version of application software and operation manual

81 paper version of the operation manual

9One microcomputer operation terminal for data collection and processing with pre installed applications and drivers

2、 Common parameters of JS94 series microelectrophoresis (Zeta potential analyzer)

1Adopting microelectrophoresis method, in accordance with GB/T 32668-2016 "General rules for gel particle zeta potential analysis electrophoresis method"

2Power consumption:<150W Power input voltage: 220V 50Hz

3Applicable environment: shockproof platform Applicable temperature range: room temperature to 35 ℃, reading accuracy of 0.1

4Accuracy of measurement: System error within 5%

5、 PH range: generally used in the range of 2.0 to 12.0, but can also be used in the range of 1.6 to 13.0

6Cup shaped open electrophoresis device, equipped with a specially designed electrode bracket

7Measurable zeta potential and isoelectric point of dispersed systems

3、 Characteristics of JS94 series microelectrophoresis (Zeta potential analyzer) instrument

1The instrument adopts a newly designed new and simple electrophoresis cell, using a 0.5cm thick glass cup with electrodes built into the cell. The electrophoresis cup and built-in electrodes undergo precise microfluidics calculations and surface treatment to form a set of electrophoresis devices that are different from traditional electrophoresis cells. The sample usage during testing is extremely small, only 0.5ml per time, easy to clean, convenient to use, and economical and practical.

2The electrode holder is carefully designed and closely matched with the electrophoresis cup to form a cup-shaped open electrophoresis device. The electrodes are made of silver, platinum, and titanium metal wires, and after surface treatment, the working state is stable.

3Well made rice markers are placed in electrophoresis cups and placed on a 3D platform. After adjusting the 3D platform, a clear rice image can be seen on the computer screen to locate the measurement position without any static layer issues.

4The electrophoresis instrument adopts a semiconductor luminescent near-field optical system with a power of only a few tens of microwatts, which will not affect the measurement environment and accuracy due to heat generation. The optical system has been adjusted and the magnification has been increased. Short wavelength blue and green light are used, so smaller particles can be seen clearly.

5Using a constant voltage low-frequency conversion power supply can prevent polarization and greatly improve measurement speed. The positive and negative switching time is continuously adjustable from 0.30 seconds to 1.20 seconds, and the sampling time only takes 3 to 10 seconds. The voltage between electrodes can be adjusted as needed.

6Using a temperature sampling probe, it automatically and continuously samples the ambient temperature, returns it to the computer, and automatically adjusts the parameters for calculating the Zeta potential. Using computer multimedia technology, at a given beat, automatically take continuous "photos" of ultrafine particles magnified 1200 times, providing a total of four grayscale images for analysis and calculation in both directions.

4、 Advantages and disadvantages of using microelectrophoresis to measure zeta potential and light scattering electrophoresis to measure zeta potential

If you need to compare the advantages and disadvantages of measuring zeta potential using microelectrophoresis and light scattering methods, please refer to "Precision and Accuracy - Discussion on Two Measurement Methods for Zeta Potential".

Comparison Table of Domestic and Foreign Microelectrophores (Zeta Potentiometer) (Table 2)
Zeta electric potential	Shanghai Zhongchen JS94 series (Using microelectrophoresis method)	Import (Using light scattering electrophoresis method, mostly laser diffraction method)
measurement method	Using video measurement technology, the entire analysis process is "what you see is what you get", so the data must be accurate, and it is difficult to make mistakesmeasured value.	Generally, laser diffraction measurement technology is used, “In the ISO13320 standard, it is specifically stated that if the particle size is less than tens of micrometers, the Mie theory should be used to input the correct sample refractive index and absorption index in order to obtain more accurate results”. It can be seen that the zeta potential measured by this type of instrument can only be obtained with the support of correct parameters such as refractive index and absorption indexcalculated value.
measurement object	It is one of the accurate instruments for measuring zeta potentialHowever, due to its measurement method limitations, it can only observe the shape and size of charged particles one by one, and cannot generate a histogram of the particle size distribution of the entire dispersion system.	It is one of the instruments used to measure the histogram of particle size distribution in the entire dispersion systemHowever, its accompanying function of measuring zeta potential only has reference significance.
applicable scope	Since there is no need to measure the particle size distribution of the entire system, only a portion of the non settling charged particles need to be taken to characterize the zeta potential of the charged particles in the entire dispersed system. Therefore, the tested sample only needs to have a portion of the charged particles with a particle size between 0.1 and 50 microns.	“When particles are as small as a few hundred nanometers, their diffraction intensity almost loses its dependence on angle”.
sample prepare	The sample does not require pre-treatment, even if the situation (such as thick and opaque samples) only requires dilution.	Many samples need to be pre processed according to the operation manual and obtain the correct refractive index and absorption data of the sample in order to obtain the calculated value of zeta potential.

Note 2: The blue text in the above table is quoted from the October 2009 issue of "Instrument News" - "Technical Status and Instrument Selection of Laser Particle Size Analyzer" (Malvern Instruments Co., Ltd., Qin Heyi)

5、 Introduction to Shanghai Zhongchen Digital Technology Equipment Co., Ltd

Shanghai Zhongchen Digital Technology Equipment Co., Ltd. is a high-tech enterprise in Shanghai. The company relies on domestic universities and research institutions, widely adopts the scientific and technological achievements of relevant experts at home and abroad, and focuses on the development of performance measurement technology products such as colloids and interfaces, powder technology, textile fibers, etc. Our company's products can be widely used in industries such as cosmetics, mineral processing, papermaking, medical and health care, building materials, ultrafine materials, environmental protection, marine, chemical, petroleum, spraying, paint and ink, printing and dyeing, textiles, integrated optics, LCD displays, etc. The company's customer base includes not only major domestic universities and research institutes, but also a large number of multinational enterprises such as Apple, 3M, Foxconn, HOYA Optics, Youda Optronics, Samsung Electronics, Philips, OPPO, as well as Weiyuan Biochemistry, BYD, Xinwanda, Desai Dianchi, Helitai, Ningde Times, Changxin Technology, BOE, Ningxia Orient, Crystal Optronics, Rainbow Holdings, SANDISK, and other listed companies. Its products are exported to the United States, Egypt, Japan, South Korea, Malaysia, Thailand, India, Indonesia, Singapore, and China's Hong Kong, Macao, Taiwan, China.

The company develops and produces more than 60 professional instruments in eight series, including contact angle measurement, surface tension measurement, Zeta potential measurement, LB membrane interface measurement, single fiber measurement, bundle fiber measurement, fabric measurement, microscopic measurement, and customized testing machines. It has independent intellectual property rights for its software and hardware, which can guarantee users' rights to after-sales maintenance, upgrades, and services.

The English word "powereach" used by Zhongchen Du Chuang means "power comes from everyone", reflecting the core values and corporate culture of Shanghai Zhongchen, which is "people-oriented, employees and users are the company's great wealth". Meanwhile, "POWEREACH" is also a registered trademark of Shanghai Zhongchen and will become one of the instrument manufacturer brands of *.