Inspect The Difference Between Luminance And Illuminance Using Colorimeters

In the world of lighting, all the terms sound similar but actually they have a different meaning. This can lead to many confusion and overall misunderstanding of lighting terminology. The widely used lighting terms that usually mixed up with each other and create confusion are luminance and illuminance. So, what is the difference between these two words?

Luminance

Luminance describes the measurement of the amount of light which emits, passes or reflects from a particular surface from a solid angle. It also explains that how much luminous can be observed by the human eye. This clearly describes the brightness of light which is emitted or reflected from a surface. In the color measurement laboratories, luminance is used to measure the brightness of the displays. There are numerous units that are used for explaining the luminance. The SI unit of luminance is candela/square meter or cd/m2. The luminance can be quantified easily using colorimeters, spectrophotometers, etc.

Illuminance

It is the amount of light that falls or spreads on the particular area. Illuminance explains that how the human being observes the brightness of an illuminated surface of the sample. That is why users use term illuminance or light which creates confusion as brightness also describes the luminance. To explain the difference between the two, illuminance refers to the particular kind of light measurement whereas the brightness is the psychological sensation of light. The SI unit of illuminance is lux. This can be measured with the color measuring cabinets.

Testronix offers a broad range of color measurement devices such as colorimeters, color viewing booths, spectrophotometers and many more. For more information on these devices, visit: www.testronixinstruments.com/

Ensuring The Best Quality Of Food Products With Accurate Food Color Measurement

The sense of sight has a very great impact on the sense of taste and hence most of the time, if the food is not looking good, then it will also not taste delicious. Human mind usually perceives the color of the food products with the help of its appearance and color. This fact is also justified by numerous scientific studies. This is why the manufacturers of food products need to ensure that the color of their food products is perfect and makes their products attractive. In the food industries, the best method to ensure that the products they manufacture are of best quality then, it is essential that they have a close check on the quality of the color used during the manufacturing process. Along with that accurate food, color measurement is also required to ensure that the level of color saturation in the food is perfect level.

Use of Testronix Colorimeter in Food Industry

For perfect food color measurement, Testronix offers best colorimeters that can be used for testing the colors of the food products with great precision. One such instrument is TP 60 CP.  The instrument can be used for testing the transmittance that is offered by the food products and then analyzes its color vibrancy.

Key Features of Testronix TP 60 CP

1.       The instrument has a silicone photodiode array type sensor for accurate measurement.

2.       The instrument can be used anywhere due to its easy portability.

3.       Pass/fail criteria are programmable in the instrument.

4.       Their lithium ion rechargeable battery allows the users to use the instrument without being dependent on the electrical power supply.

Technical Features of Testronix TP 60 CP

1.       The viewing geometry of the instrument is 8⁰ / d.

2.       The instrument comes with two flat surface apertures having diameters of 4mm and 8mm.

3.       The instrument is efficient for measuring the color spaces including CI E L AB, XYZ, LCh, CI E RGB, CI E LUV.

Application of TP 60 CP in food industry

With an accurate color measurement of food products, the instrument can help the manufacturers of the products to analyze the quality of the food products as well as ensure that the processing of the products done in the right way. In this way, they can provide the best quality of products to the customers. 

Did Color of Coffee Affect its Taste?

Light brown, medium brown, dark roasted and black are some of the common responses when we talk about the coffee. This depends on the color element of coffee flavor, which is important for the roasted coffee beans to fulfill the demand of the customers. The successful coffee manufacturers carried their process of production by following a strict color evaluation process. This quality control process of coffee bean’s color helps to monitor the flavor of the coffee throughout the manufacturing process and even at the time of roasting. 

Different colors of Roasted Coffee Beans

The process of roasting transforms the flavor and color of the beans. Hence, it is necessary to keep a proper check on the coffee beans at the time of roasting and needs to be monitored carefully. There are four categories of roasted coffee such as dark, medium, medium dark, and light. The color of the coffee affects its taste. The dark color of coffee tastes bitter as compared to that of light colored coffee. For complete quality control of coffees, colorimeters are used to determine the level of roast. Testronix instruments offer a broad range of colorimeters to test the different food products. TP60 CP is the best measuring device which is used to measure the color of roasted coffee beans. The instrument offers valuable data regarding the color quality of the coffee. The device provides the results in Pass/Fail criteria and determines whether the product meets the actual color measurement requirements or not.

Technical Expertise of TP 60 CP

·         Illuminating geometry of the device is 8/d

·         Offers LED light source for sample illumination.

·         Two measuring apertures i.e. flat and tip aperture of diameter 8mm and 4mm are used.

·         Lights used as source of illumination are D65， A， C， D50， F2， F6， F7， F8， F10， F11， F 12

• Instrument require only 0.4 seconds for single measurement.
• Offers a high rate of repeatability with ΔE* ab 0. 03 with an average of 30 56.
• Data that can be displayed on the screen includes a color difference value graph.

For more information on TP 60CP, visit: www.testronixinstruments.com/

Detect the Quality And Reality Of Drugs With Portable Spectrophotometers

Spectrophotometers are the best and unique testing devices that are used to analyze the appearance and color quality of the products. Different spectrophotometers have different feature and are used in numerous applications. Spectrophotometers are the best measuring devices that are used to find out the fake drugs that are sold on the black market and severely affecting the health of the consumers.

Use of Portable Spectrophotometers in Pharmaceutical Sector

Pharmaceutical companies document the color of the compounds for the trademark reasons and for quality control aspects as well. The chemical and compounding techniques that are used to make the medicines influence the colors of the drugs and permit the pharmaceutical companies to build color for each and every product. When the color of a particular batch of production deviates from the color of standard medicine, it is quickly identified with the spectrophotometers and simply rejected. Now the spectrophotometers are also preferred by the government organizations all around the world to detect the illegal drugs before they hit the market.

When the illegal drugs are discovered, the testing instruments such as spectrophotometers or colorimeters are used for detecting such drugs. These tools quickly analyze the color and reflectance pattern of the materials and compare the resulting data with the standards that are meant for these drugs in pharmaceutical companies.

Technical Specifications - TP800 Spectrophotometer

·         Ring-shaped illuminations with 45 Degree vertical viewing angle which adheres to GB/T 3978, CIE Number - 15.

·         Integrated sphere of the device has diameter 58mm

·         Equipped with silicon photodiode array type sensor.

·         It offers 10nm of wavelength pitch.

·         Reflectance range is 0-200%.

For more information on TP 810 Spectrophotometer, visit: www.testronixinstruments.com/

Assess The Whiteness Of Towels And Bed Sheets With Color Checkers

During the manufacturing of hand towels, bath towels, bed sheets and various hospitality products, white color is often preferred (majorly for linen fabrics) as it is directly associated with the cleanliness and freshness of the products and considered more hygienic as compared to another color of the goods. There are no standards as such to choose a white color, and the preference of the buyers of white color depends totally on the liking and taste of the customers. With the frequency of use and exposure to white products to chemicals fades the whiteness of the linens to yellowish color which looks untidy and unhygienic.

The lack of whiteness on the linen fabric makes the user discard the product before the end of its life which leads to incurring an unnecessary cost by replacing it. Visual assessment and measuring of whiteness is a subjective factor which can influence the results due to the eye fatigue, light conditions, and various other factors. Therefore making use of color checkers is the best way to measure the whiteness of fabric efficiently and more appropriately.

Use of Testronix’s Color Checkers

Testronix Instruments manufacture a wide array of color checkers that are used to measure the whiteness index of different hospitality products. These devices include TP 800 Spectrophotometers, TP 60CP color checker, TP 300 Portable color measuring instrument and many more. These devices are capable enough to ensure the whiteness level and grade the product accordingly.

Technical Specifications of Color Checkers

The instruments work on the viewing geometry of 8^o/d and comprises of measuring apertures of different diameters. The device is equipped with CIE L*a*b* color measurement data that is proficient in quantifying the colored linens. For more information on whiteness measurement color checkers, visit www.testronixinstruments.com/ or contact us for a free consultation. 

Evaluation Of Paint Color Combinations With Spectrophotometers

Paints are extensively used in many different industries for a different purpose. The primary purpose of paints is to provide protection to a surface from external factors such as corrosion, moisture, etc. In this way, paints help in protection and preservation of different products and surface. In addition to providing protection, the paints are also used for enhancement of the appearance of the products and surfaces. The paints are used in different combinations to enhance the aesthetic appeal of the surface so that the customers are attracted towards the products easily. In order to make sure that the products have the best appearance, the manufacturers of product need to ensure that the paints used for a surface are of best quality. For this, they need to test the paint color combinations using proper instruments such as a portable spectrophotometer.

The portable spectrophotometer is one of the best instrument that can accurately evaluate the quality of colors that are incorporated on a surface. The instrument works on the principle of absorbance and transmittance. It measures the absorbance or transmittance of light through a surface which eventually gives the information about the color quality.

Highlights of Testronix Portable spectrophotometers
 
Here are some of the highlights of Testronix spectrophotometer

1.    The instrument offers easy operation with the highly ergonomic design.
2.    The instrument is designed to provide a high rate of repeatability.
3.    The instrument is very lightweight and easily portable.

Technical specifications of Testronix Portable spectrophotometers
 
1.    The instrument has an aperture of 8 nm.
2.    The color difference formula used by the instrument is ΔE*uv, ΔE*ab, ΔE*cmc(2:1), ΔE*94, ΔE*cmc(1:1), ΔE*00.
3.    The instrument gives the measurement of the color spaces XYZ, XYZ, CIE LAB, CIE LUV, LCh, LAB&WI&YI where WI is considered as per ASTM E313, AATCC, Hunter, CIE/ISO, and YI.
4.    The device is in compliance with ASTM D1925 and ASTM 313.
5.    The reflectance range offered by the instrument is from 0 to 200%.
6.    The instrument has a silicone diode array type sensor.

Use of Portable spectrophotometer in paint industries
The spectrophotometers are widely used in paint industries for the purpose of testing the color quality of the paint color combinations. The instrument is very efficient in analyzing the various aspects of the paints such as saturation, hue, color temperature and reflectance which gives complete information about the quality of paint products produced by the manufacturers.

The instrument comes with a rechargeable battery that helps the users in using the instrument even in the case of power outage. The instrument is best for enhancing and maintaining the quality of the paint products that are delivered to different industries.

Handy Color Checker with Large Aperture – TP 20 XE

TP 20XE is a light-weight and handy color measuring device which is designed by the highly skilled professionals of Testronix. The instrument works on the viewing geometry of 45o/0o. As suggested by its name, it is popularly known as the Large Aperture Device as it is designed with the large aperture of diameter 20mm. The instrument offers highly accurate and precise test results. It is the best measuring device which is widely used to fulfill all the requirements of color measuring applications in different production verticals.

Purpose of Using Large Aperture Measuring Device

The TP20XE helps to eliminate the human errors and accurately judge the critical values of samples easily. It is the highly recommended device that fulfills the color quality control requirements of different industries such as textile, pharmaceuticals, paint and powder coating, plastic applications, food industries and many more. The testing instrument helps to determine the color difference and helps to reduce down the production cost and augment the competitiveness of the product.

Applications of TP 20XE

The apparatus is used in wide variety of applications in different industries such as food and beverage industry, building material, textile, paper industry, paints, inks, fabrics and other textile materials and many more.

Highlights of TP20XE

The instrument is designed to perform color measurement especially on wet products such as beverages, food items, chemicals, solutions and many more. It offers dual locations to view the samples i.e. cross location and illumination location. It is designed with silicon photoelectric diode light sensor along with the measuring aperture of diameter 20mm.