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The Evaporative Light Scattering Detector UM 5000 is a general-purpose detector. It is the upgraded product of the first domestically produced evaporative light scattering detector UM 3000. Its performance index has reached the level of international similar products, and it is the most cost-effective instrument brand of its kind.
As a major project of the “Tenth Five-Year†National Science and Technology Research Project, UM 3000 was successfully developed in Shanghai Tongwei Analytical Technology Co., Ltd. in 2007, and won seven honors such as BCEIA Gold Award.
UM 5000 advantage
Lowest noise level
Low temperature evaporation, stable to 130 ° C high temperature evaporation conditions
Ultra-high sensitivity: laser and photomultiplier tube, the highest configuration of similar products
The UM5000 can detect any sample with lower volatility than the mobile phase without the use of chromophores. The sensitivity is 1-2 orders of magnitude higher than that of the refractive index detector. It is insensitive to temperature changes and stable at baseline. Suitable for gradient elution liquid chromatography. Use together. Low-temperature atomization and evaporation of mobile phase, high sensitivity to heat-labile and semi-volatile compounds; extensive gradient and solvent compatibility, no solvent peak interference; auxiliary carrier gas improves detection sensitivity and keeps the detection chamber clean, Avoid pollution; high-precision temperature control to ensure high-precision detection.
Performance parameters:
Evaporation zone temperature range from room temperature to 130 °C
Temperature adjustment increment 1 °C
Temperature control accuracy ±1 °C
Gas requirements Nitrogen or air
Gas input pressure 2~5 bar
Gas pressure measurement accuracy 0.01bar
Gas consumption 1~4 L/min
Gas flow accuracy 0.02 L/min
Solvent flow rate 10 μl to 3 mL/min
Light source 650 nm laser diode
Detection element photomultiplier tube + laser
Detection limit
Baseline noise
Baseline drift
Typical quantitation range 0.1 to 30 μg (glucose, HPLC)
Quantitative repetitive RSD6
Signal output 0-10 mVDC, or 0-1 VDC
Computer interface RS232
Instrument configuration
1. Evaporative light scattering detector 1
2, workstation software 1 set
3, 1 Air Compressor
4, related accessories 1 set
Features:
The instrument adopts the patented technology of detecting light cone with high sensitivity;
The coating type auxiliary carrier gas improves the detection sensitivity and avoids contamination of the detection pool;
Low temperature atomization and evaporation, simultaneous detection of semi-volatile and non-volatile compounds, and good sensitivity to thermally unstable compounds;
High precision temperature and pressure control to ensure high precision signal acquisition for analysis accuracy;
Precision power supply can meet the requirements of stable operation of the instrument;
At the same time, powerful software control functions: temperature control processing, gas flow closed-loop control, temperature, pressure, flow, PMT signal data acquisition and data processing.
Optimize circuit design to effectively reduce instrument noise levels;
With a wider detection dynamic range, the same spectrum can show samples with larger mass spans;
Effectively reduce chromatographic peak broadening and improve resolution;
The atomization mechanism is easy to disassemble and easy to clean.
With a new design, the outline of the exterior is more concise and generous. The internal structure is more reasonable and compact, reducing more electromagnetic interference, and comprehensively and effectively improving the comprehensive detection performance of the product.
I believe that we can bring more accurate and stable work experience to new and old customers.
Application range
It has been widely used in the detection of carbohydrates, lipids, fatty acids, amino acids, drugs and polymers, especially the determination of active ingredients without UV absorption of traditional Chinese medicines and proprietary Chinese medicines.
 