The Different Types of HPLC Pumps
From cosmetic products to environmental analysis and vaccinations, chromatography is an imperative analysis technique to keep products, our environment, and many more aspects of our lives safe and provide pressure measurement solutions. One of the most common types of chromatography is high-performance liquid chromatography (HPLC). To conduct an HPLC analysis, an HPLC pump is necessary. Read on to learn more about the different types of HPLC pumps.
What Is an HPLC Pump?
Liquid chromatography is a separation technique that separates particles of a compound in a solvent mixture to fully analyze each individual particle. In HPLC, an HPLC pump, also known as a solvent delivery system, forces the solvent through a column, where separation occurs under high pressure. HPLC pumps can deliver pulseless flows against considerable backpressure and create reproducible results—two highly important aspects of chromatography analysis.
The Different Types of HPLC Pumps
While there are many types of HPLC pumps, here are a few of the most common types.
Constant Pressure Pumps
Constant pressure pumps are a standard in the chromatography industry. These pumps offer consistent and continuous flows rate across the column through pressure from a gas cylinder.
Constant Flow Pumps
Constant flow pumps come in two basic types. These pumps can either be a reciprocating piston pump or a syringe pump. Reciprocating pumps can either be a dual-piston or a single-piston. These types of transport solvents by the reciprocating motion of a piston in a hydraulic chamber. Meanwhile, a syringe-type pump is ideal for small bore columns, as it delivers a constant flow rate to the column through a motorized screw arrangement
Other Common Types of HPLC Pumps
- High-Pressure Mixing Pumps
- Low-Pressure Mixing Pumps
How To Find the Right Pump
Choosing the right pump for your high-pressure applications can be challenging. There is a lot to consider when picking the right pump, including the specifics of your application, like backpressure and flow rate, as well as pump preferences. For example, some pumps may be a standalone rig while others are fully automated with computer software.
HPLC pumps are an essential piece of equipment in chromatography. Knowing the differences in HPLC pumps and how to choose the right one can make a significant difference in your chromatography analysis.
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