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Colorimeter for Reading Paper-Based Devices

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. …

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Discussion on Related Issues of colorimeter

With the development of science and technology and the progress of precision instrument manufacturing, the performance of colorimeter is also constantly optimized and perfected. The colorimeter is an instrument that decomposes light with complex components into optical latent lines. The colorimeter has high sensitivity, a wide application range, high accuracy, compact structure, low price, easy operation, less sampling, …

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What is the Difference between Colorimeters and Spectrophotometers?

Introduction Spectrophotometry is a technique that measures how much a substance absorbs light by measuring the intensity of light, as a beam of light passes through it. The basic principle is that every compound absorbs or transmits light over a certain range of frequencies (wavelengths). If we take a measure of this, it could be …

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How to Troubleshoot the Color spectrophotometer?

In a basic biology lab class, a spectrophotometer appears pretty robust and easy to use. That’s still the case for the most part, despite the increasing sophistication of the instruments—some covering wavelengths from the near-infrared (NIR) through ultraviolet (UV). To get the most accurate results. In this article, we will explore ways to avoid problems …

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How to Eliminate the Transmittance Difference of a Colorimeter?

Transmittance accuracy refers to the difference between the measured value of a sample with a standard transmittance value and the nominal transmittance value of the standard sample by a colorimeter without considering random errors. When the instrument is in a working state, the light source should be stable without flickering. When the wavelength is set at …

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Why is There a Deviation in the Transmittance Indication of the Colorimeter?

As a common instrument for quantitative analysis of chemical substances, photometers are widely used in scientific research, production, medical treatment, laboratory, and other fields. In order to ensure the accuracy and reliability of the measured values of the instrument, the colorimeter must be verified according to JJG178- 2007 “Verification Regulations for Ultraviolet, Visible and Near-Infrared colorimeters”. …

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