Complete Product Description

The HP 1090 Series HPLC system, introduced in the early 80's, is regarded to be an outstanding instrument in terms of performance and reliability. It was developed with the objective to create an HPLC system with optimized pump performance at 50–5000 μl/min flow rates and with a new type of detector that could acquire spectral data online. The result was a high performance solvent delivery system (DR5) and a new UV detector based on diode array detection technology (DAD)

It is legendary for introducing the first self metering pump which enables such superb precision.

This High-Performance Liquid Chromatograph is complete and consists of the following integrated modules:

a) Solvent delivery system,
b) Injector,
c) Column compartment,
d) Detector,
e) Waste reservoir,
f) Optional HPLC ChemStation,


The HP 1090 chromatograph with a DR5 solvent delivery system which can have one, two or three solvent channels active. Each solvent channel comprises a solvent reservoir and a dual-syringe metering pump with rotary valve. The channels are mixed in the low pressure compliance before being pumped at high pressure, via a damping unit through the injector and onto the column. This system allows you to run in isocratic mode (only one solvent), binary (50:50, 75:25,...) or ternary (40:40:20, 35:35:30,...), and also it can be programmed to run with a gradient elution. A HP 1090 chromatograph is also equipped with a helium inlet line for solvent degassing which removes other gases dissolved in the solvents

A HP 1090 Chromatograph has both a manual injector and an autoinjector. The first one allows you to do only a single injection and the second can be programmed to do up 99 injections in a sequence. The sample injection valve is a six-port rotary valve designed for high performance liquid chromatography. When an injection is started, an air actuator rotates the valve: solvent goes directly to the column; and the injector needle is connected to the syringe. The air pressure lifts the needle and the vial is moved into position beneath the needle. Then, the needle is lowered to the vial. The sample is drawn up into a sample loop by the syringe, metered by a stepper motor. The needle is raised a second time to allow the vial to move away. Then, the needle is lowered a second time and the air actuator reverses the valve, reconnecting the sample loop to the solvent flow. All the sample is flushed out of the injector, reaching the column as an undiluted plug. Finally, the syringe stepper-motor moves the syringe plunger to the end of the syringe sending the remaining solvent to the waste.

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HPLC System

HPLC Pump