Some investigators describe a point-of-care system, with a microfluidic paper device and a handheld optical colorimeter, for quantifying analyte concentrations in biological fluids. First came paper-based microfluidic devices. Then came the idea of using camera phones to relay data from paper-based assays. an inexpensive handheld colorimeter that generates quantitative data in a point-of-care analytical system. …
Ultraviolet and visible light range (UV/VIS) is widely applied in research, production and quality control for the classification and study of substances. UV/VIS spectroscopy is based on the absorption of light by a sample. Depending on the amount of light and its wavelength absorbed by the sample, valuable information can be obtained, such as the …
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The theory of chromaticity is relatively mature, and its application in the field of cultural relics protection and restoration has been developed. The restoration effect of ancient ceramics is greatly affected by the light source. The light source of the restoration room does not match the light source of the exhibition hall, which may lead …
Application Pocket Colorimeters in Ancient Ceramics? Read More »
Important indicators of colorimeter For the colorimeter, there are several most important indicators which are wavelength repeatability, photometric accuracy and photometric repeatability. In the process of judging whether the instrument is normal or not, the above indicators will also be analyzed. ● Wavelength accuracy. In the process of analyzing the colorimeter, a very critical factor …
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With the development of science and technology and the progress of precision instrument manufacturing, the performance of colorimeter is also constantly optimized and improved. A caliber 4mm pocket colorimeter is an instrument that decomposes light with complex components into spectral lines. Its measurement range includes the ultraviolet light region with a wavelength of 200-380 nm …
For a long time, agricultural soil testing and fertilization have relied on conventional photoelectric colorimeters, which require soil samples to be retrieved from the field, dried, and then sent to the laboratory for measurement. There are many shortcomings in this method, such as large investment in instruments, inability to be portable, many auxiliary pieces of …
A Small, Lightweight and Easy-to-Operate Colorimeter Read More »
Now, the market has higher and higher requirements for product quality. It no longer only meets the internal quality of diammonium phosphate but also has higher requirements for external quality (particle size, color, etc.). At present, the diammonium phosphate sold on the market has various colors such as green, yellow, brown, black, natural color, etc. …
How to Use a Colorimeter to Measure the Chromaticity of Diammonium Phosphate? Read More »
Remote sensing techniques are used on asphalt pavements to study their physical and chemical characteristics, and also to evaluate the condition of pavements such as aging and material composition. There are various techniques in remote sensing that can be used for the study of asphalt concrete’s behavior, including spectral libraries, Unmanned Aerial Vehicles (UAVs), digital …
The Use of Colorimeters to Support Remote Sensing Techniques on Asphalt Pavements Read More »
Analytical instruments often seem as inconspicuous “black boxes”, with vital components well hidden from plain sight. Despite the understandable engineering requirements to shield components from the environment, usually little is given in the way to provide students with a sense of the instrument’s inner workings. One of the most common applications of colorimeters and the …
Introduction As we all know, water is an important natural resource for the survival and development of human beings. Therefore, water quality monitoring is attracting increasing attention. Currently, the monitoring instruments are bulky, expensive, and time-consuming. A handheld colorimeter can improve the flexibility and automation of water quality monitoring. In order to test the performance …
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