List of Global HPLC Manufacturers

High-Performance Liquid Chromatography (HPLC) is a powerful analytical technique used to separate, identify, and quantify components in a mixture. It operates on the principle of chromatography, where the sample is dissolved in a solvent (mobile phase) and passed through a column packed with a stationary phase. The components of the sample interact differently with the stationary phase, causing them to separate based on their respective chemical properties, such as size, polarity, and affinity.

Here are some key components of HPLC:

• Pump: Provides a continuous flow of the mobile phase through the system at a constant pressure and flow rate.
  
• Injector: Introduces the sample into the mobile phase stream.
• Column: Contains the stationary phase where separation of sample components occurs.
• Detector: Monitors the eluent leaving the column and produces a signal proportional to the concentration of the components.
• Data System: Collects and processes the detector signal to generate chromatograms and quantify sample components.

More details can be found here:   Introduction of LC, HPLC, UPLC, MS and LC-MS and Flow Control Techniques- Part I   & Introduction of LC, HPLC, UPLC, MS and LC-MS and Flow Control Techniques- Part II

The chromatograms provide information about the identity, quantity, and purity of the components in the sample.  The main working principle of High-Performance Liquid Chromatography (HPLC) involves the separation of components within a sample based on their interaction with two phases: the mobile phase and the stationary phase. Here's how it works:

• Sample Introduction:

The sample to be analyzed is dissolved in a solvent known as the mobile phase. This solution is introduced into the HPLC system through an injector.

• Mobile Phase Flow:

A high-pressure pump generates a continuous flow of the mobile phase through the system. The mobile phase carries the sample through the chromatographic column.

• Chromatographic Column:

The column is packed with a stationary phase material. The stationary phase is typically a porous solid or a gel, coated with a liquid phase.  As the sample travels through the column, different components interact with the stationary phase to varying degrees based on their chemical properties such as size, polarity, and affinity.

• Separation of Components:

Components of the sample experience different degrees of retention on the stationary phase. Those with stronger interactions with the stationary phase are retained longer, leading to slower movement through the column.

This differential interaction causes the components to separate from each other as they move through the column. Components with weaker interactions elute (exit) from the column earlier, while those with stronger interactions take longer to elute.

• Detection:

As the separated components elute from the column, they pass through a detector. The detector measures the concentration of each component based on its physical or chemical properties. The detector generates a signal that is proportional to the concentration of each component, producing a chromatogram that represents the separation of the sample.

• Data Analysis:

The signals from the detector are collected and processed by a data system. The data system generates chromatograms and quantifies the amount of each component in the sample based on the detector signals.

Overall, the main working principle of HPLC revolves around the controlled interaction between the sample components and the stationary phase within the chromatographic column, leading to their separation and subsequent detection for analysis.

HPLC is a versatile and widely used technique in analytical chemistry, offering high sensitivity, selectivity, and reproducibility for a diverse range of applications across various industries and scientific disciplines.

Applications of HPLC:

• Pharmaceutical Analysis:

Quantification of active pharmaceutical ingredients (APIs) and impurities in drug formulations.

Determination of drug stability, degradation products, and metabolites.

Analysis of raw materials, excipients, and intermediates in drug manufacturing.

• Environmental Analysis:

Detection and quantification of pollutants, pesticides, and herbicides in water, soil, and air samples.

Monitoring of contaminants in industrial effluents and wastewater.

• Food and Beverage Analysis:

Identification and quantification of additives, preservatives, pesticides, and mycotoxins in food and beverage products.

Analysis of vitamins, amino acids, and fatty acids in nutritional supplements and dietary products.

• Clinical Diagnostics:

Measurement of drug concentrations in biological fluids (blood, serum, plasma, urine) for therapeutic drug monitoring.

Analysis of biomarkers, hormones, and metabolites for disease diagnosis and monitoring.

• Forensic Analysis:

Identification and quantification of drugs of abuse, toxins, and illicit substances in biological and non-biological matrices.

Analysis of trace evidence, such as fibers, paints, and explosives, in criminal investigations.

• Biochemical Research:

Separation and purification of proteins, peptides, nucleic acids, and other biomolecules.

Characterization of biomolecular interactions, such as affinity chromatography and size exclusion chromatography.

There are numerous manufacturers of High-Performance Liquid Chromatography (HPLC) instruments, each offering a range of systems, columns, detectors, and accessories to meet the diverse needs of chromatographers across various industries and applications.  Here are some of the prominent manufacturers of HPLC equipment:

• Agilent Technologies
• Welch Materials
• Waters Corporation
• Thermo Fisher Scientific
• Shimadzu Corporation
• PerkinElmer, Inc.
• Bruker Corporation
• Bio-Rad Laboratories
• Gilson, Inc.
• Phenomenex
• Restek Corporation
• JASCO Corporation
• Hitachi High-Tech Corporation
• Knauer GmbH