4. What are the advantages and disadvantages of post-splitter technology compared to front-splitter technology?
The most commonly used technique is post-spectroscopy. Advantages a. Dual-wavelength or multi-wavelength measurement can be selected at the same time, which greatly reduces noise.
Improved analysis accuracy b. There are fewer movable parts in the optical path, which not only improves work efficiency, reduces the failure rate, but also improves the analysis
Analytical accuracy. But the biggest disadvantage is that it is limited by its detector pixels, it is difficult to obtain a wide spectral range and narrow resolution at the same time;
In addition, the signal-to-noise ratio of the whole band is relatively large, and it often has a good signal-to-noise ratio in the visible region, but the signal-to-noise ratio in the ultraviolet region is relatively high.
5. The automatic biochemical analyzer can be divided into four types: discrete, dry chemical, continuous flow and centrifugal.
6.What is the principle of a discrete automatic biochemical analyzer?
Discrete type is to arrange the program by manual operation, replacing manual operation with orderly mechanical operation. Pipette probe
Add the samples to the respective reaction cups, the reagent probes are automatically added to the reagents at a fixed time, and after the mixer is automatically mixed,
React under certain conditions. The reaction cup is also used as a cuvette for colorimetric determination.
