Introduction to the Quaternary Pump

Overview

Overview

The quaternary pump is based on a two-channel, dual plunger in-series design which comprises all essential functions that a solvent delivery system has to fulfill. Metering of solvent and delivery to the high-pressure side are performed by one pump assembly which can generate pressure up to 400 bar.

Degassing of the solvents is done in a vacuum degasser and solvent compositions are generated on the low-pressure side by a high-speed proportioning valve.

The pump assembly includes a pump head with an active inlet valve which has an replaceable cartridge, and an outlet valve. A damping unit is connected between the two plunger chambers. A purge valve including a PTFE frit is fitted at the pump outlet for convenient priming of the pump head.

A continuous seal wash (optional) is available when the quaternary pump is used with concentrated buffer solutions.

Figure 41

Hydraulic Path of the Quaternary Pump

Vacuum chamber (Degasser)

From solvent bottles

 

Damper

 

 

 

To sampling

 

 

unit and

Inlet

Outlet

column

 

valve

valve

 

 

 

To waste

199

Page 199
Image 199
Agilent Technologies 1100 Series manual 199

1100 Series specifications

Agilent Technologies 1100 Series is a highly regarded lineup of high-performance liquid chromatography (HPLC) systems designed to meet the demanding needs of laboratories in various fields including pharmaceuticals, environmental testing, and food safety. Known for its versatility, reliability, and advanced technology, the 1100 Series has established itself as a benchmark for analytical performance.

One of the standout features of the Agilent 1100 Series is its modular architecture. This design allows users to configure the system according to specific analytical requirements. The components such as pumps, detectors, and autosamplers can be mixed and matched to create a tailored solution, ensuring maximum efficiency and optimal performance. This modularity also facilitates easy upgrades and maintenance, significantly extending the life cycle of the instrument.

At the heart of the 1100 Series is its advanced pumping technology. The system utilizes precise, high-pressure pumps that ensure a consistent flow rate and excellent reproducibility, essential for accurate quantification of analytes. The binary and quaternary pump options provide flexibility in method development, enabling users to perform gradient elution with ease.

The Agilent 1100 Series also boasts a range of detectors, including UV/VIS, fluorescence, and refractive index detectors. Each detector is designed to enhance sensitivity and specificity, enabling the detection of a wide array of compounds. The UV/VIS detector, in particular, is known for its reliable performance and user-friendly interface, which simplifies method setup and data analysis.

Another critical aspect of the 1100 Series is its autosampler. The system's autosamplers provide high throughput and automatic sample handling, which significantly reduces human error and increases productivity. The intelligent design allows for temperature control and reliable sample injection, ensuring optimal results.

In terms of software, the 1100 Series is supported by Agilent’s OpenLAB software, which offers an intuitive platform for method development, data acquisition, and analysis. This software integrates seamlessly with the HPLC hardware, making it easier for scientists to manage workflows and maintain compliance with regulatory requirements.

Overall, the Agilent Technologies 1100 Series represents a significant advancement in liquid chromatography, bringing together ideal characteristics such as modularity, precision, versatility, and sophistication. Its commitment to innovation and quality makes it a preferred choice for laboratories seeking reliable analytical solutions.