For novice users, how to choose UV spectrophotometer becomes a difficult problem. In order to help everyone solve this problem, Shanghai Baxu technicians will explain in detail the techniques and methods of purchasing UV spectrophotometer!
First, understand the features of the UV spectrophotometer:
1. Stability and stability are one of the most important indicators for users. The purpose of the instrument is to be stable and reliable, and unstable is not reliable.
2. Spectral bandwidth refers to the band width at the 1/2 height of the monochromatic spectral line intensity profile curve emitted from the monochromator. Characterize the spectral resolution of the instrument. According to Beer's law, the spectral bandwidth should be as small as possible, but if the source energy of the instrument is weak, the sensitivity of the optical sensor is low, the spectral bandwidth is small, and the ideal measurement result is not obtained. Therefore, be careful when selecting and using the instrument.
3. Noise is also one of the important indicators of the instrument. It characterizes the instrument's ability to make dilute solutions. This indicator is also as small as possible.
4. The accuracy and repeatability of the wavelength. Each value of the instrument is measured at a certain wavelength. If the wavelength shown and the actual wavelength deviate by a million miles, then the coincidence between the measured value and the true value is from Talking about it? The importance of this indicator can be seen.
5, luminosity accuracy, luminosity accuracy refers to the difference between the actual measured luminosity reading value and the true value. It is a direct user requirement for the instrument, and every user must pay attention to it.
6, stray light, it refers to the place where there should be no light. It is the main source of error in spectral measurements. Of course, the smaller the value, the better.
Second, the UV spectrophotometer cost performance:
Regardless of which type of product is selected, as long as the instrument type is selected, it must be purchased according to the price in the product range of the same type of instrument. Of course, in the same kind of instrument, whoever buys the price is cheaper; Note: Sometimes the price difference does not necessarily have to be cheap, but also a comprehensive assessment; this requires more understanding, more reading, more comparison, more experienced and consulted; do not just listen to the words of the salesperson.
Third, about after-sales service:
"Without excellent after-sales service, the instrument manufacturers have no life." This is a rumor, and the truth is not mentioned here.
It has been proved by practice that instruments produced by instrument manufacturers without good after-sales service guarantees will not be too good!
The above "Technical Methods for Purchasing UV Spectrophotometer" is provided by Shanghai Bashu. If you want to know more about the UV spectrophotometer, you can contact Shanghai Baqi Industrial Co., Ltd.!
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