The nutritional value of sesame and soybean is very rich, and it is also the main raw material for the production of edible oil. With the improvement of people's living standards, there are certain requirements for food and fat, not only the quality is required, the nutrition is high, and the color is also good. Therefore, it is necessary to use the Lovibond colorimeter to measure the color of the grease. The Lovibond colorimeter is a visual color measurement instrument, also known as a comparative colorimeter, which uses an internationally recognized proprietary color scale, the Rovibond color scale, to measure the chromaticity of various liquid, colloidal, solid, and powder samples. It is an instrument that measures the color of a substance by visual color matching method. The Lovibond colorimeter can be used for the measurement of color of plastics, textiles, food, jam, grain, grease, rosin, spices, rubber, etc. The transmission method is suitable for the measurement of liquid and transparent colored materials, and the reflection method is suitable for the surface color of non-transparent materials. Measurement. The working principle of the Lovibond colorimeter is based on the principle of color subtraction hybrid matching. The optical system of the Lovibond colorimetric tube refracts light to 90° and divides the field of view into two parts, which can be viewed simultaneously, one of which is to observe the field of view of the sample color; the other part is to observe the reference color (ie, Lovibond) The field of view of the chromaticity unit standard color filter). The color filter combination is appropriately selected to achieve the best match with the color of the sample to be tested. At this time, the amount of the Lovibond filter displayed by the instrument is the measurement result of the sample to be tested. The WSL-2 Lovibond colorimeter provided by Top Yunon is currently widely used in the market, specifically with the following features:
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1. The design is in full compliance with the internationally recognized Rovibond color scale.
2. The color matching in the sub-field of view is high and the measurement sensitivity is high.
3, simple and intuitive Luo Wei Peng digital color language, quantitative description of color measurement results.
4. The visual color effect of various substances in the spectral range visible to the naked eye can be determined.
5, the instrument structure is simple, easy to use, easy to master. 