China CHNSpec Technology （Zhejiang）Co.,Ltd Company Cases

At present, there are two methods for measuring platinum and cobalt color. One is the method of visual inspection, and the other is instrumental measurement. The method of visual inspection has large errors. However, the measurement with the CS-810/820N Color Spectrophotometer instrument will have accurate values and work more efficiently. After test, we can see the color value directly. The instrument measurement method on the market is more popular now.   CS-810 Pt-Co Color Spectrophotometer   CS-820N Pt-Co Spectrophotometer   Briefly introduce a customer who uses CS-810/820N Color Spectrophotometer. His demand is platinum-cobalt color Hazen≤10, industry standard platinum-cobalt color Hazen≤50. Our instrument meets customer needs.   Our measurement process is to use the CS-810/820N Color Spectrophotometer instrument to test first, and then use the computer color QC software to measure the data quickly, and can print the report, which not only improves the work efficiency, but also improves the product quality. If you have related requirements, please call us +86 571 85888707 or contact us by email.

Color measurement is mainly divided into the measurement of the color of the light source and the measurement of the color of the object. The object color measurement is divided into fluorescent object measurement and non-fluorescent object measurement. In actual production and daily life, color measurement of non-fluorescent objects is widely used. It is mainly divided into two categories: visual color measurement and instrument color measurement. Among them, instrument color measurement includes photoelectric integration method and spectrophotometry method.   1. Visual method The visual method is the visual perception of light produced by the eyes, the brain, and our life experience. The light we see with the naked eye is generated by electromagnetic waves with a narrow wavelength range, and electromagnetic waves of different wavelengths show different colors The recognition of color is the visual nerve sensation caused by the naked eye after being stimulated by electromagnetic wave radiation energy. The unknown colors of the individual components are added together to describe the resulting unknown colors. Although it is most suitable for color evaluation. The way to rely on it is with the help of the human eye, and it is simple and flexible, but due to the experience of observers and psychological and physiological factors The impact of this method makes the method too many variables and cannot be described quantitatively, which affects the accuracy of the evaluation.   2.The photoelectric integration method For a long time, the density method has occupied a very high position in color measurement, but with the application of CIE1976L *, a *, b * gradually becoming widespread, and has covered the entire work flow from press to printing, people are more and more aware of color The importance of degree, and the rapid development of modern colorimetric have also laid the foundation for the objective evaluation of color by photoelectric integration instruments ( precision color difference meters). The photoelectric integration method is a common method used in instrument color measurement in the 1960s. It does not measure the color stimulus value of a certain wavelength, but measures the tristimulus values X, Y, and Z of the sample through integral measurement over the entire measurement wavelength interval, and then calculates the chromaticity coordinates and other parameters of the sample. When using such three photo detectors to receive light stimuli, the tristimulus values X, Y, and Z of the sample can be measured with one integration. The filter must meet Luther's conditions to accurately match the photo detector. The photoelectric integration instrument cannot accurately measure the tristimulus value and chromaticity coordinates of the excellent source, but can accurately measure the color difference between the two color sources, so it is also called a color difference meter. Foreign color difference meters have been mass-produced since the 1960s, and China has been developing such instruments since the early 1980s. Nowadays, the CS-210 precsision colorimeter produced by Hangzhou CHNSpec Technology Co.,Ltd has been used. CS-210 Precision Colorimeter   3. Spectrophotometry Spectrophotometry is also called spectrophotometer. It compares the light energy reflected (transmitted) by the sample with the standard reflected (transmitted) light energy under the same conditions to obtain the spectral reflectance of the sample at each wavelength, and then uses CIE The provided standard observer and standard light source are calculated according to the following formula to obtain the tristimulus values X, Y, and Z, and then X, Y, and Z are used to calculate the chromaticity coordinates x according to the formulas such as CIE Yxy and CIE Lab. y, CIELAB chromaticity parameters, etc. The spectrophotometer determines the color parameters by detecting the spectral components of the sample. It can not only give the absolute values of X, Y, Z and the color difference value △ E, but also give the spectral reflectance value of the object, and can draw the object. Therefore, it is widely used in color matching and color analysis. The use of such instruments can achieve high-accuracy color measurement, calibration of photoelectric integral color measurement instruments, and establishment of chromaticity standards. Such instruments were first developed in China. CS-600 Integrating Sphere Color Spectrophotometer is color spectrum. Therefore, the spectrophotometer is an authoritative instrument in color measurement.   Color Spectrophotometer CS-600   Company introduction Our CHNSpec Technology Co., Ltd are specialized on manufacturing haze meter, spectrophotometers, colorimeters and gloss meters. Our products have gotten 10 Invention Patents including 1 American Invention Patent, 8 Utility Model Patents, 4 Appearance Patents and 3 Software Copyrights till now.    

Measurement and analysis of haze and clarity guarantee a uniform and consistent product quality and help analyze influencing process parameters and material properties, e.g.cooling rate or compatibility of raw materials.   The figure on the picture shows the measurement principle of the haze meter:   A light beam strikes the specimen and enters an integrating sphere. The sphere's interior surface is coated uniformly with a matte white material to allow diffusion. A detector in the sphere measures total transmittance and transmission haze. A ring sensor mounted at the exit port of the sphere detects narrow angle scattered light ( clarity). Standard Methods The measurement of Total Transmittance and Transmission Haze is described in international standards. Two different test methods are specified: 1. IS013468 Compensation method 2. ASTM D1003 Non-compensation method The compensation method takes the light reflected on the sample surface into account. Differences between the two methods can be approximately 2 Total Transmittance on clear, glossy samples.   ASTM D 1003 Measurement conditions are different during calibration and actual measurement. During calibration, part of the light escapes through the open entrance port of the haze meter. While taking a measurement, the entrance port is covered with the sample, thus, the amount of light in the sphere is increased by the light reflected at the sample surface.     ISO13468 Measurement conditions are kept equal during calibration and measurement due to an additional opening in the sphere. During calibration the sample is placed at the compensation port. For the actual measurement, the sample is changed to the entrance port. Thus, the so-called sphere efficiency is independent of the reflection properties of the sample.     Two Standard Methods in one Unit The clarity and haze meter CS-720 complies with both ASTM and ISO measurement standards. It can meet the following measurement standards ASTM D1003 / D1044, ISO13468 / ISO14782, JIS K7105, JIS K7361, JIS K7163 and other international standards. If any inquiry, you are welcome to contact us.  

What is haze？ Haze is also called turbidity. It indicates the degree of unclearness of transparent or translucent materials. It is the appearance of cloudiness or turbidity caused by light scattering inside or on the surface of the material. It is expressed as the percentage of the ratio of the scattered light flux to the light flux through the material.   Why measure haze？ Haze measurement can be used to quantify the optical properties of plastics and packaging films. Obscure films in packaging applications can reduce consumer perception of quality, such as when packaging products look blurry. For plastics with haze, the visibility of the test material becomes more pronounced and reduces the contrast of the observed objects.   Factors affecting haze measurement Part1: light source Different light sources have different relative spectral energy distributions. Because various transparent plastics have their own spectral selectivity, the same material is measured with different light sources, and the obtained light transmittance and haze value are different. The darker the color, the greater the impact.In order to eliminate the influence of the light source, the International Institute of Illumination (CIE) has specified three standard light sources A, B, and C. This method uses a "C" light source.       Part2: Influence of surface condition The surface state of the sample mainly refers to whether the surface is flat and smooth, whether there are scratches and defects, and whether it is contaminated.       Part3: Effect of specimen thickness As the thickness of the sample increases, the light absorption increases, the light transmittance decreases, and light scattering increases, so the haze increases. Transmission and haze can only be compared at the same thickness.  

Introduction of Spectrophotometer Spectrophotometers are color measurement devices used to capture and evaluate color. As part of a color control program, brand owners and designers use them to specify and communicate color, and manufacturers use them to monitor color accuracy throughout production. Spectrophotometers can measure just about anything, including liquids, plastics, paper, metal and fabrics, and help ensure that color remains consistent from conception to delivery. The spectral reflectance curve provided by a spectrophotometer is commonly known as the color’s “fingerprint”.   According to the geometry, the spectrophotometer can be divided into D/8, 45/0 (or 0/45), and multi angles spectrophotometer. D/8 Spectrophotometer D/8 geometry is the most commonly used geometry for color spectrophotometer. D / 8 means integral sphere diffuse illumination, 8 ° viewing angle. It can be widely used in paint industry, plastic industry, textile industry and many other industries which need to measure color.   45/0 (or 0/45) Spectrophotometer     This instrument measures light reflected at a fixed angle to the sample, usually 45˚, and can exclude gloss to most closely replicate how the human eye sees color. They are commonly used for measuring color on smooth or matte surfaces such as printing products, road signs, etc.   Multi-Angle Spectrophotometers

Battery electrolyte Electrolyte is the "blood" of lithium battery, which plays the role of conducting electrons between the positive and negative electrodes in the battery, and is the guarantee for lithium battery to obtain high voltage and high power and other excellent performance. Electrolyte is generally composed of organic solvent, electrolyte lithium salt, additives, under certain conditions, according to a certain proportion of the configuration.     Pt-Co / Hazen / APHA Color Pt-Co / Hazen / APHA platinum and cobalt color scale refers to the use of different concentrations of Pt-co solution for chromaticity grading. The concentration ranges from 0-500, also known as Hazen and APHA color scale.   Transmittance color spectrophotometer CS-810 made by CHNSpec Tech can be used to measure the Pt-Co / Hazen / APHA color for battery electrolyte with the following advantages: 1. Measuring range 0-500, accurate measurement 2. Automatic color measurement, no naked eye comparison, saving time and effort; 3. Free computer software that can export and print test reports; 4. Strong acid and alkali liquid protection cover to protect the instrument from corrosion; 5. Equipped with quartz cuvette as standard without fear of battery electrolyte corrosion;  

What is acrylic sheet？ Acrylic is also called special-processed plexiglass. It is a replacement product of plexiglass. The light box made of acrylic has good light transmission, pure colors, rich colors, beautiful and flat, taking into account the two effects of day and night, long life, does not affect the use, and other features.   How to calculate transmittance？ In the process of measuring the haze and light transmittance of the sample, it is necessary to measure the incident light flux (T1), the transmitted light flux (T2), the scattered light flux (T3) of the instrument, and the scattered light flux (T4) of the sample. Calculation method of Transmittance: Tt= T2/ t1x100%   How to calculate haze? Haze: H= [t4-t3 (T2/T1)]/ t2x100% The formula of haze value H can be simplified as: H(%)= [(T4/T2)-(T3/T1)]×100%   How to Measure Acrylic Plastic Sheet?（The products that measure haze are Color Spectrum TH-100, CS-700, CS-701 and CS-720） Take Color Spectrum Haze Meter TH-100 as an example 1.Start Connect the instrument to the power source, press the power key, the indicator light is always blue, and the instrument starts normally. 2.0% and 100% calibration. Put the 0% calibration cover on the test port so that the integrating sphere does not receive any light. Press the OK key on the side of the instrument to calibrate.100%: Keep the test port open, let the light from the light source pass through the test port, and press the OK key on the side of the instrument for calibration. 3.Measure After calibration, place the transparent acrylic plastic sheet in the test port and click the test button next to the instrument. The result will be available in 2 seconds. The operation process is very simple.  

Colorimeter A colorimeter is a tristimulus color measurement tool that provides an objective evaluation of color characteristics based on light passing through the primary filters of red, green, and blue. It simulates how the human eye percieves color.   How it works? Using an internal light source, a colorimeter shines light down onto the surface of the sample. As the light reflects back up to the device, it passes through three filters: red, green and blue. These filters distill tri-stimulus (RGB) values that match how our eyes see color. colorimeter applications: Colorimeters can be used to test the surface color of objects. They’re also used to specify color. Designers can carry them around to capture inspiration colors for use in their designs. However, colorimeters are limited in their capabilities. Since they are blind to metamerism (a common phenomenon that occurs when two colors appear to match under one lighting condition but not when the light changes), they aren’t ideal for all production applications, especially formulation.   Spectrophotometer A spectrophotometer is a more complex color measuring instrument that factors in light intensity as a function of the color. It performs full-spectrum color measurement, as opposed to a colorimeter’s tristimulus procedure, and generates color data that’s beyond observation by the human eye.   How it works? A spectrophotometer works almost same way, except for one main difference – the filters. Instead of using three filters to determine the RGB values, spectrophotometers typically have 31 filters to measure the full color spectrum of visible wavelength range. These filters measure light in each of 31 different wavelengths to determine the color of the sample. Spectrophotometers come in many shapes and sizes, from small handheld devices to large benchtop, to in-line devices used during manufacturing production. Since they can evaluate how color will be under different light sources, spectrophotometers are ideal for identifying metamerism.       Spectrophotometer applications: Spectrophotometers can measure just about anything, including liquids, plastics, paper, metal and fabrics. There are three primary types 45º/0º instruments present light at a fixed angle to the sample, and can exclude gloss to most closely replicate how the human eye sees color. They are commonly used for measuring color on smooth or matte surfaces. A spherical instrument presents diffused light and can measure both excluding gloss (SCE) and including gloss (SCI). They are commonly used for measuring color that has been applied to textured surfaces such as textiles, carpets and plastics, as well as shiny or mirror-like surfaces, including metallic inks, printing over foil, and other highly glossy surfaces.A multi-angle spectrophotometer presents light at a single angle but measures at multiple angles – It is essentially used for color measurement of metallic and pearlescents pigment such as nail polish and automotive coatings.     Colorimeter Vs Spectrophotometer Colorimeter Spectrophotometer An instrument for psychophysical analysis which provides measurements that correlate with human eye-brain perception. Colorimetric data directly read and provide tristimulus values such as XYZ, L, a, b, etc. An instrument for physical analysis which provides wavelength by wavelength spectral analysis of reflecting and/or transmitting properties of objects without interpretation by human. It can indirectly calculate psychophysical information. It consists of sensor and data processor. It consists of sensor plus data processor or computer with application software It has a set illuminant and observer combination usually D65/10° It has many available illuminant/observer combinations which can be used for calculating tristimulus data and metamerism index. Extract tristimulus (RGB) values that match the colors seen by our eyes and convert to LAB It isolates narrow band of wavelengths using prism/grating/interference filter. It is more simple instrument. It is more complex compare to colorimeter. It works well for routine comparisons of similar colors and for adjustment of small color differences under constant conditions. It works well for color formulation, measurement of metamerism and variable illuminant/observer conditions. Examples of colorimeter instruments: HunterLab D25 series, ColorTrend HT Examples of Spectrophotometer instruments: HunterLab ColorFlexes, COlorQuests, LabScans, MiniScans, SpectraProbes, UltraScans

What is haze? Haze is also called turbidity. It indicates the degree of unclearness of transparent or translucent materials. It is the appearance of cloudiness or turbidity caused by light scattering inside or on the surface of the material.   What is transmittance? It is expressed as a percentage of the ratio of the luminous flux transmitted through the material to the incident luminous flux. Usually refers to the standard light source of a beam of parallel light perpendicular to the film, sheet, plate-shaped transparent or translucent material, the ratio of the luminous flux(T1) transmitted through the material and the incident light flux (T2)to the transparent material.   Relationship between haze and transmittance Two very important optical performance indicators of transparent materials, such as aerospace plexiglass require light transmittance greater than 90% and haze less than 2%. Generally speaking, materials with high light transmittance have low haze value and vice versa, but not completely.. Some materials, such as ground glass, have high light transmittance and high haze values. So light transmittance and haze are two independent indicators. Test principle When testing, when there is no incident light, the received light flux is 0. When there is no sample, all the incident light is transmitted, and the received light flux is 100, which is T1; At this time, the parallel light is absorbed by the light trap, and the received light flux is the scattered light flux T3 of the instrument;Then place the sample, and the instrument receives the light flux through the sample as T2; At this time, if the parallel light is absorbed by a light trap, the light flux received by the instrument is the sum T4 of the scattered light flux of the sample and the instrument.Based on the measured values of T1, T2, T3, and T4, light transmittance and haze can be calculated.   Transmittance:        Haze value:   Why measure haze and transmittance? The first is the screen industry. In the screen industry, companies like screen covers, light guide plates, and diffuser plates have very high requirements for these two parameters. Second, the glass industry, whether it is outdoor or indoor, glass products have light transmission performance. The requirements are very high, the haze of the glass needs to be very low, and the transmittance is high; and the film industry is very widely used.                                          cellphone screen                    watch   How haze meter working theory? This is the light path structure diagram of this haze meter. The light source emits parallel light, passes through the sample and enters the integrating sphere. Part of the transmitted light is parallel light and part is scattered light. A photoelectric sensor is installed on the inner wall of the integrating sphere perpendicular to the parallel beam to obtain the light flux signal. The light trap is used to absorb all the incident light when there is no sample in the test port. The light trap is equipped with a shutter, which is coated with the same high reflectivity coating as the integrating sphere wall. The shutter can be opened and closed as required. Light trap: When measuring the haze, the light trap will open (because the scattered light will be collected to calculate the haze); when measuring the total transmittance, the light trap will be closed; haze meter can be automatically measured, all you have to do is place the sample at the test    

Haze : Wide Angle Scattering   The light before passing through the sample is called incident light, the entire light after passing through the sample is called transmitted light, and the scattered light with a scattering angle greater than 2.5 ° after the transmission sample is called scattered light, haze Is the scattered light than the transmitted light (as show in green color of picture 2) and Tt is the total transmitted light (as show in pink color of picture 1).   So haze equation is Haze = Td / Tt.     Haze Measuring Instrument   We will introduce how to measure haze by CHNSpec Haze Meter TH-100. It can meet both ISO and ASTM standards.   TH-100 haze meter   What is the measurement method of TH-100? This is the light path structure diagram of this haze meter. The light source emits parallel light, passes through the sample and enters the integrating sphere. Part of the transmitted light is parallel light and part is scattered light. A photoelectric sensor is installed on the inner wall of the integrating sphere perpendicular to the parallel beam to obtain the light flux signal. The light trap is used to absorb all the incident light when there is no sample in the test port. The light trap is equipped with a shutter, which is coated with the same high reflectivity coating as the integrating sphere wall. The shutter can be opened and closed as required. Light trap: When measuring the haze, the light trap will open (because the scattered light will be collected to calculate the haze); when measuring the total transmittance, the light trap will be closed; haze meter TH-100 can be automatically measured, all you have to do is place the sample at the test.     For more details of haze meter TH-100, you can refer to the following url   1). Haze Meter TH-100 Working Video https://www.youtube.com/watch?v=qtyhHWB8r_Y&t=24s   2). TH-100 Haze Meter Accuracy Test Video https://www.youtube.com/watch?v=k3b4X-kERss&feature=youtu.be   CHNSpec Tech is specialized on provide color, gloss and haze measurement solutions. If any future inquiry, you are welcome to contact me for more details.

Colour Measurement Spectrophotometer CS-820N for Opaque and Transparent Plastic   CS-820N contains both D/8 and D/0 geometry to make it is suitable to measure both opaque, translucent and transparent materials. We get four plastic samples from customers. They need to measure the sample color value.We will introduce how to measure the color of plastic by the colour measurement spectrophotometer CS-820N.   Step 1. Prepare the Samples   Grey and Blue Plastic (Opaque)   Transparent and Yellow Plastic (Transparent)   Step 2. Measurement and Test Results 1. Do black and white calibration according to the instrument instruction (in reflectance mode).   White calibration     Black calibration   2. Set instrument setting as follows for color test of opaque plastic samples. 1).Illuminate: D65 2).Standard Observer: 10 degree 3).Test Mode: Reflectance 4). Test Parameter: L*a*b 5).Test Mode: SCI     3.Measure and Test Result Test Method: One sample measure one point to get the test result.   Grey Plastic (Opaque) Color Measurement   Blue Plastic (Opaque) Color Measurement     Grey and Blue Plastic Color Test Result Name L a b Blue Plastic 44.51 -12.73 -34.15 Grey Plastic 46.97 -0.08 -3.04   2. Set the instrument into transmittance mode. 1).Illuminate: C 2).Standard Observer: 2 degree 3). Test Parameter: L*a*b   3. Do black and air calibration according to the instrument instruction (in transmittance mode).     Black calibration   Air calibration   3.Measure and Test Result Test Method: One sample measure one point to get the test result.   Transparent Plastic Color Measurement   Yellow Plastic Color Measurement     Transparent and Yellow Plastic Color Test Result Name L a b Transparent Plastic 87.64 -1.32 2.24 Yellow Plastic 93.56 -22.04 83.07   CHNSpec Tech is specialized on manufacturing instrument for color, gloss and haze measurement. If any inquiry or questions, you are welcome to contact with us.

How to measure haze? The haze we refer today is the transmission haze. The greater the haze value means that transparency declines, that is, “seeing is not clear”.   Which industries need measure haze? Haze and transmittance are important parameters for plastic sheets, functional films, glass, LCD panel and other transparent and semi-transparent materials. These manufacturers need to measure haze and transmittance.   What is haze? To answer this question, we should firstly know what is transmittance? The following is the haze and transmission formula. Transmittance / Total Transmittance Total transmittance is the ratio of transmitted light to the incident light. Its equation is Transmittance= Tt / T1. Tt is the transmitted light (as show in pink color of picture 1). T1 is incident light (as show in the blue color of picture 1). Picture 1   Haze : Wide Angle Scattering According to ASTM definition haze is the percentage of light which passing through deviates from the incident beam greater than 2.5 degree on the average. So haze equation is Haze = Td / Tt. Td is the scattered light which is greater than 2.5 degree (as show in green color of picture 2) and Tt is the total transmitted light (as show in pink color of picture 1). Picture 2 How to measure haze? Transmission haze is most commonly tested by haze meter. Haze meter can meet both ISO and ASTM standards. We will introduce how to measure haze by CHNSpec Haze Meter TH-100. TH-100 Haze Meter     What's the advantages of haze meter TH-100? √ Easy to operate, one key calibration and test, fast measurement speed √ Configure Android operating system, better user experience √ Instrument does not need preheat, as soon as start, it can be used √ High precision, haze repeatability 0.05, transmittance repeatability 0.1 √ Good user experience, support both horizontal and vertical measurement √ Economic model to save cost for customer √ Free QC software to generate test report   For more details of haze meter TH-100, you can refer to the following url   1). Haze Meter TH-100 Working Video https://www.youtube.com/watch?v=qtyhHWB8r_Y&t=24s   2). TH-100 Haze Meter Accuracy Test Video https://www.youtube.com/watch?v=k3b4X-kERss&feature=youtu.be   CHNSpec Tech is specialized on provide color, gloss and haze measurement solutions. If any future inquiry, you are welcome to contact me for more details.