UV spectrophotometer
If you have been to a chemical laboratory, you must be familiar with this instrument. To detect the type and purity of the substance, determine the composition and stability constant of the complex, study the reaction kinetics, organic analysis, etc., this instrument is inseparable.
It is the UV spectrophotometer we are going to introduce today.
Technical indicators
Wavelength range :190-900nm
Spectral bandwidth :1.0
Wavelength accuracy: ±0.1nm (D2 656.1nm), ±0.3nm full area
Wavelength repeatability: ≤0.1nm
Stray light :≤0.03%T
Photometric accuracy :±0.2%T
Stability :0.0004A/h (at 500nm)
Baseline flatness :±0.001A
Data output :USB interface
Printout :parallel port
Photometric display range :0-200%T, -4-4A, 0-9999C (0-9999F)
Display system: 320*240 dot matrix highlighting backlight large screen LCD liquid crystal display
Software
Light source: imported xenon lamp, tungsten lamp
Receiver,:imported silicon photodiode
Dimensions :460*380*220mm
Weight: 20kg
Instrument application
1. Verification substance
2. Comparison with standard and standard maps
3. Compare the absorption coefficient of the maximum absorption wavelength
4, purity test
5. Presuming the molecular structure of the compound
6. Determination of hydrogen bond strength
7. Determination of complex composition and stability constant
8. Reaction kinetics study
9. Application in organic analysis
Routine maintenance
First, temperature and humidity are important factors affecting the performance of the instrument. They can cause corrosion of mechanical parts, causing the surface finish of the metal to decrease, causing errors or degradation of the mechanical parts of the instrument; causing corrosion of optical components such as gratings, mirrors, focusing mirrors, etc., resulting in insufficient light energy, stray light, Noise, etc., even the instrument stops working, which affects the life of the instrument. It should be calibrated regularly during maintenance. It should have an instrument room with four seasons and constant humidity, equipped with constant temperature equipment, especially in the laboratory in the south.
Second, the dust and corrosive gases in the environment can also affect the flexibility of the mechanical system, reduce the reliability of various limit switches, buttons, photoelectric couplers, and also cause one of the reasons why the aluminum film corrosion of the components must be learned. Therefore, it must be cleaned regularly to ensure environmental and instrument indoor sanitary conditions and dust.
3. After the instrument has been used for a certain period of time, a certain amount of dust will accumulate inside. It is best to open the instrument cover regularly by the maintenance engineer or under the guidance of the engineer to perform dust removal inside, and re-fasten the heat sink of each heating element to the optics. The sealed window of the box is cleaned, the light path is calibrated if necessary, the mechanical part is cleaned and necessary lubrication, and finally, the original state is restored, and then necessary detection, adjustment and recording are performed.
