When delivering smaller particles through the liquid mobile phase of a HPLC unit, the liquid must be forced through the column under pressure. The purpose of an HPLC pump, also called a solvent delivery system, is to force the liquid through the system while maintaining a specific flow rate. HPLC pumps can be broadly categorized into three types: syringe pumps that provide pulseless delivery, reciprocating or piston pumps that push the mobile phase through with a series of pistons, and pneumatic pumps that use gas to pressurize the mobile phase. Reciprocating pumps are most common due to their good pressure generation, constant flow rate, and small footprint, but each type of pump has its pros and cons that should be weighed when purchasing. Other things to look out for when selecting a pump include the instrument’s compatibility with different solvents, low dead volume to minimize issues with solvent changeover, delivery method (either isocratic or gradient), as well as things like price, ease of use, and lifetime.
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| Company | Shimadzu | Shimadzu |
| Item | LC-40D XS HPLC/UHPLC Pump | LC-40D X3 HPLC/UHPLC Pump |
| Citations | | |
| Catalog Number | LC-40D XS | LC-40D X3 |
| Price | | |
| Description | Experience ultimate confidence with your resolution, sensitivity and separation with the innovative LC-40DXS UHPLC pump. The parallel dual plunger design provides the utmost in gradient accuracy and repeatability for UHPLC separations.
Features: - Operable in constant flow or constant pressure mode,
Experience ultimate confidence with your resolution, sensitivity and separation with the innovative LC-40DXS UHPLC pump. The parallel dual plunger design provides the utmost in gradient accuracy and repeatability for UHPLC separations.
Features: - Operable in constant flow or constant pressure mode, as well as isocratic, binary high-pressure gradient, ternary high-pressure gradient, or quaternary low-pressure gradient mode.
- Internal solvent selection valve (2 or 4-channel) or a low-pressure gradient formation (LPGE) unit can be added as options.
- Unique FlowPilot technology ramps up the pump flow gradually, waits for the column to reach its set temperature, then ramps to the set flow rate, reducing potential column damage from pressure shock.
- FlowPilot automatic diagnostic and recovery capabilities allow monitoring of pressure fluctuations for anomalies, restoration of normal operation, and can alert users of low solvent levels.
- The pump can display total operating time, volume of solvent delivered for each seal, and maintenance, error, and operation logs.
- Users can set solvent compressibility to further reduce pulsation during operation.
- Can be controlled by the LCD front panel keypad, web browser, and various HPLC and LC-MS/MS software.
... Read More | Discover faster analysis, better resolution, and more reproducible chromatography with our new flagship UHPLC pump. Our industry leading LC-40D X3 pump ensures precision and accuracy at all flow rates.
Features: - Operable in constant flow or constant pressure mode, as well as isocratic, binary high
Discover faster analysis, better resolution, and more reproducible chromatography with our new flagship UHPLC pump. Our industry leading LC-40D X3 pump ensures precision and accuracy at all flow rates.
Features: - Operable in constant flow or constant pressure mode, as well as isocratic, binary high-pressure gradient, ternary high-pressure gradient, or quaternary low-pressure gradient mode.
- The pump can display total operating time, volume of solvent delivered for each seal, and maintenance, error and operation logs.
- Unique FlowPilot technology ramps up the pump flow gradually, waits for the column to reach its set temperature, then ramps to the set flow rate, reducing potential column damage from pressure shock.
- Users can set solvent compressibility to further reduce pulsation during operation.
- Can be controlled by the LCD front panel keypad, web browser, and various HPLC and LC-MS/MS software.
... Read More |
| Type | Parallel-type double plunger | Parallel-type double plunger |
| Flow Rate | 0.1 uL/min to 10 mL/min | 0.1 uL/min to 10 mL/min |
| Gradient Type | High-pressure or quaternary low-pressure | High-pressure or quaternary low-pressure |
| Max. Pressure | 105 Mpa | 130 Mpa |
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