Shanghai spectroscopy analysis large screen spectrophotometer uses a light source that can generate multiple wavelengths. Through a series of spectroscopic devices, a light source of specific wavelengths is generated. After the light passes through the tested sample, part of the light is absorbed, and the absorbance value of the sample is calculated, thereby converting it into the concentration of the sample. The absorbance value of the sample is proportional to the concentration of the sample.
Large-screen spectrophotometer http://www.xp17.net/Products-11569532.html
Large-screen spectrophotometer product features:
●Using ARM system;
●Using dot matrix highlighting 6" LCD display, with clear display and complete information;
●Long-path optical path design makes the instrument resolution higher, especially suitable for trace tests;
●Strong data processing function, so that the test results can be fully applied, making user editing simpler and faster;
●Using a suspension optical system design, the overall optical path is independently fixed on the cutting aluminum deformation-free base. The deformation of the bottom plate and the vibration of the outside world have no impact on the optical system, thus greatly improving the stability and reliability of the instrument;
●Using a synchronous sinusoidal mechanism, with high wavelength accuracy and good repeatability;
●24-bit high-speed, high-precision A/D conversion, the instrument has higher accuracy and faster reaction speed;
●The main components are imported configuration, making the instrument less complex, more stable and more reliable;
●More powerful functions, and the host can independently complete photometric measurement, quantitative measurement, and spectrum scanning, kinetics, DNA/protein testing, multi-wavelength testing and data printing functions;
●Full consideration of the usage habits of different users, this series of instruments is equipped with spectral scanning software standard. When operates online, in addition to implementing all test functions of the host, it can also realize more powerful data processing functions and make data storage unlimited.
large-screen spectrophotometer color development reaction selection:
color development reaction is divided into two categories, namely complexation reaction and redox reaction, complexation reaction is the main color development reaction. The principle selected by
is:
1) Select sensitive color development reaction. The size of mole absorbance coefficient ε is an important sign of the sensitivity of color development reactions, so the color development reaction of the generated color substance should be selected.
2) Select the color developer as good as possible. That is, the color developer only undergoes color development reaction with one component or a few components.
3) The color developer has no obvious absorption at the measured wavelength. The difference between the larger absorption wavelengths of two colored substances is usually called contrast. Generally, the contrast between the color developer and the colored compound is more than 60nm.
4) The colored compound generated by the reaction is constant and the chemical properties are stable.
