![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/Welprep_2000-1_600x600.jpg?v=1739510877)
④ High Pressure Constant Current Pump(with manual injector) ⑤ Preparative Column Racks
High Pressure Pump
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/welprep_2000-4_480x480.jpg?v=1739511363)
By employing a microprocessor controller, the system utilizes a single-drive dual-plunger design for the pumpheads, allowing for series connection (up to 50mL/min) orparallel connection (above 50mL/min). lt incorporates solvent compression compensation and multi-point fowrate curve calibration technology to achieve high-precision fluid delivery within a wide dynamic range, from lowpressure to high pressure, and from low flow rates to high flow rates.The system incorporates a binary high-pressure infusion pump that combines linear step gradients and isocratic steps, resulting in numerous gradient curves with diferent linear velocity gradients.This approach enhances method development capabilities, reducing analysis time and saving solvent costs, ultimately achieving the desired experimental resuitsIn terms of safety features, the instrument is equipped to promptly alarm and follow the preset program, automatically stopping the pump operation to prevent unexpected situations.
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/Welprep_2000-2_1024x1024.jpg?v=1739511390)
UV-Vis Detector
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/welprep_2000-7_480x480.jpg?v=1739511567)
The deuterium lamp of WelPrep2000 UV-visible detector adopts a new generation of technology, featuring dual-wavelength high sensitivity detection. lt is specifcally designed for the detection of substances related to pharmaceuticals. The dual-wavelenath detection function enables shorter data acquisition intervals, saving time andsamples.
The universal sample cell design allows for easy interchangeability between micro-volume and macro-volume cells. lt offers different optical path lengths, such as 0.5mm, 1.25mm, 2.0mm, 3.0mm, and 10.0mm, to suit diferent reguirements. The optical path can be confgured in dual-wavelength mode,enabling detection at different wavelengths. The newly desianed integrated voltage module ensures a more stable power supply.
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/Welprep_2000-UV.jpg?v=1739511622)
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/Welprep_2000-UV-1.jpg?v=1739511756)
Data Management System
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/welprep_2000_data_480x480.jpg?v=1739511918)
- The user interface of the data processing system is user-friendly, easy to learn and use, fuly functional, andconvenient to operate.
- The data management system integrates instrument control, data acquisition, and data processing into oneplatform. lt features a graphical monitoring interface that provides real-time monitoring of the operation process.
- Default report templates and user-defned report settings can be confgured, allowing for rich report content
- The system includes comprehensive audit trail functionality for methods, sample cells, sequences, chromatograms, and data output.
- Time programs can be created with wavelength changes, allowing for optimal detection wavelengths inmulti-component analyses.
- The system complies with strong regulatory requirements, including CLP and FDA standards, ensuring data validity, security and system usability.
Fraction Collector
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/welprep_2000-9_480x480.png?v=1739512129)
- Two colection modes available, manual and automatic, both of which are simole, convenient, and user-fiendly to operate.
- The system can collect samples into containers such as 15mL or 25mL glass test tubes, providing versatiity incollection methods. lt can also be used with an 8-channel large sample cell for more diversifed collection options.
- The collection solution is separated from the circuit, ensuring safer operation.
- The system is designed with corrosion-resistant materials, making it suitable for high-solvent separation experiments.
- With the use of a high-precision three-way valve and validated cutting-edge technology, the switching process is drip-free andleak-free.
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/Welprep_2000-collector.jpg?v=1739512244)
Autosampler
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/HTA_480x480.png?v=1739512687)
- The system is equipped with advanced basic functions for automated sample injection, allowing unmanned operation and achieving higher sample throughput. Unnecessary functions have been eliminated to achieve the optimal balance between quality and cost-effectiveness.
- Compatibility: It can be used in conjunction with HPLC systems from any brand.
- Convenience: The operation is very simple, without unnecessary complicated functions.
- Continuity: It is compatible with interchangeable sample racks, making it suitable for continuous sample injection.
Preparative Column Rack
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/column_rack_480x480.png?v=1739512856)
- Welch Materials' Preparative Chromatography Column Rack can accommodate a variety of specifications of preparative chromatography columns, making the use and replacement of chromatography columns more convenient and safe.
- Made of 304 stainless steel material, with a brushed surface finish, it is both aesthetically pleasing and corrosion-resistant.
- It can be optionally equipped with a manual injection valve bracket, suitable for manual injection valve sampling.
WelPrep2000 System Configuration
10mL
50mL
100mL
200mL
500mL
1000mL
3000mL
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/Welprep_2000-1_600x600.jpg?v=1739510877)
④ High Pressure Constant Current Pump(with manual injector) ⑤ Preparative Column Racks
High Pressure Pump
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/welprep_2000-4_480x480.jpg?v=1739511363)
By employing a microprocessor controller, the system utilizes a single-drive dual-plunger design for the pumpheads, allowing for series connection (up to 50mL/min) orparallel connection (above 50mL/min). lt incorporates solvent compression compensation and multi-point fowrate curve calibration technology to achieve high-precision fluid delivery within a wide dynamic range, from lowpressure to high pressure, and from low flow rates to high flow rates.The system incorporates a binary high-pressure infusion pump that combines linear step gradients and isocratic steps, resulting in numerous gradient curves with diferent linear velocity gradients.This approach enhances method development capabilities, reducing analysis time and saving solvent costs, ultimately achieving the desired experimental resuitsIn terms of safety features, the instrument is equipped to promptly alarm and follow the preset program, automatically stopping the pump operation to prevent unexpected situations.
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/Welprep_2000-2_1024x1024.jpg?v=1739511390)
UV-Vis Detector
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/welprep_2000-7_480x480.jpg?v=1739511567)
The deuterium lamp of WelPrep2000 UV-visible detector adopts a new generation of technology, featuring dual-wavelength high sensitivity detection. lt is specifcally designed for the detection of substances related to pharmaceuticals. The dual-wavelenath detection function enables shorter data acquisition intervals, saving time andsamples.
The universal sample cell design allows for easy interchangeability between micro-volume and macro-volume cells. lt offers different optical path lengths, such as 0.5mm, 1.25mm, 2.0mm, 3.0mm, and 10.0mm, to suit diferent reguirements. The optical path can be confgured in dual-wavelength mode,enabling detection at different wavelengths. The newly desianed integrated voltage module ensures a more stable power supply.
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/Welprep_2000-UV.jpg?v=1739511622)
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/Welprep_2000-UV-1.jpg?v=1739511756)
Data Management System
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/welprep_2000_data_480x480.jpg?v=1739511918)
- The user interface of the data processing system is user-friendly, easy to learn and use, fuly functional, andconvenient to operate.
- The data management system integrates instrument control, data acquisition, and data processing into oneplatform. lt features a graphical monitoring interface that provides real-time monitoring of the operation process.
- Default report templates and user-defned report settings can be confgured, allowing for rich report content
- The system includes comprehensive audit trail functionality for methods, sample cells, sequences, chromatograms, and data output.
- Time programs can be created with wavelength changes, allowing for optimal detection wavelengths inmulti-component analyses.
- The system complies with strong regulatory requirements, including CLP and FDA standards, ensuring data validity, security and system usability.
Fraction Collector
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/welprep_2000-9_480x480.png?v=1739512129)
- Two colection modes available, manual and automatic, both of which are simole, convenient, and user-fiendly to operate.
- The system can collect samples into containers such as 15mL or 25mL glass test tubes, providing versatiity incollection methods. lt can also be used with an 8-channel large sample cell for more diversifed collection options.
- The collection solution is separated from the circuit, ensuring safer operation.
- The system is designed with corrosion-resistant materials, making it suitable for high-solvent separation experiments.
- With the use of a high-precision three-way valve and validated cutting-edge technology, the switching process is drip-free andleak-free.
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/Welprep_2000-collector.jpg?v=1739512244)
Autosampler
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/HTA_480x480.png?v=1739512687)
- The system is equipped with advanced basic functions for automated sample injection, allowing unmanned operation and achieving higher sample throughput. Unnecessary functions have been eliminated to achieve the optimal balance between quality and cost-effectiveness.
- Compatibility: It can be used in conjunction with HPLC systems from any brand.
- Convenience: The operation is very simple, without unnecessary complicated functions.
- Continuity: It is compatible with interchangeable sample racks, making it suitable for continuous sample injection.
Preparative Column Rack
![](https://cdn.shopify.com/s/files/1/0838/4351/4685/files/column_rack_480x480.png?v=1739512856)
- Welch Materials' Preparative Chromatography Column Rack can accommodate a variety of specifications of preparative chromatography columns, making the use and replacement of chromatography columns more convenient and safe.
- Made of 304 stainless steel material, with a brushed surface finish, it is both aesthetically pleasing and corrosion-resistant.
- It can be optionally equipped with a manual injection valve bracket, suitable for manual injection valve sampling.
WelPrep2000 System Configuration
10mL
50mL
100mL
200mL
500mL
1000mL
3000mL