Single beam spectrophotometerSingle-beam spectrophotometers are simple in structure and easy to use and maintain. Their single optical path directly measures the spectral characteristics of the sample. This type of instrument is suitable fo…

The structure and principle of single beam spectrophotometerStructure of a single beam spectrophotometerThe design of a single-beam spectrophotometer is relatively simple, usually with only one sample cell and a photoelectric converter . Th…

Importance of Salmon Color DetectionSalmon is a cold-water fish belonging to the family Salmonidae. It is mainly found in the cold waters of the Northern Hemisphere, such as the Pacific and Atlantic Oceans. Common salmon species include Atl…

Importance of Color Detection for TomatoesThe color of tomatoes is not only a manifestation of their appearance, but also an intuitive indicator of their maturity, flavor and quality. Whether they are eaten raw, processed or exported, the c…

What is Whiteness? What is the Whitenessindex?Whitenessis the ability of a material to reflect light and how white it appears visually. In general, white materials reflect light evenly across the entire visible spectrum, appearing bright an…

What is yellowness? Standards for measuring yellownessDefinition of yellownessYellowness is used to describe the degree to which nearly white or colorless samples tend to turn yellow. Yellowing refers to the yellowing of materials under the…

What is BlacknessBlackness is usually used to describe the depth of color, that is, the degree of darkness of the color . In layman's terms , it describes how dark black is . It refers to the ability of an object to absorb visible light…

What is Transmittance?Transmittance usually refers to the proportion of light that is not reflected or absorbed when passing through a material . It is usually expressed as a percentage (%) . For example, within a certain wavelength range, …

Ketchup is one of the most popular condiments. In order to ensure that ketchup can meet the quality standards that customers are satisfied with, it is necessary to measure the quality of ketchup . The quality measurement of ketchup is an im…