New and Used Lab Equipment - GMI Inc.


Lab Alliance UHP HPLC System

Lab Alliance UHP HPLC System

  • Ultra High Resolution Chromatography
  • High Speed Chromatography
  • Accuracy < +/- 1%, 1ml/min 10,000psi Methanol
  • Precision +/- 0.5%, 30 sec average flow
  • Allows injections to 18,000 p.s.i.
... Full Description >>>


Complete Product Description

Lab Alliance UHP HPLC System

  • Flow 0.001 ? 5.000 ml/min
  • Ultra High Resolution Chromatography
  • Pressure 18,000 p.s.i.
  • High Speed Chromatography
  • Pulsation >3000psi 1.5%
  • Accuracy < + 1%, 1ml/min 10,000psi Methanol
  • Precision + 0.5%, 30 sec average flow
  • Allows injections to 18,000 p.s.i.

20 Hz Data Collection for Fast Chromatography

The standard detector gives 20 Hz resolution to allow peaks of .2sec to be accurately measured. The system can be ordered with a high speed 80 Hz diode array or fluorescence detector. Compare this to the competition and you will find the Lab Alliance UHP HPLC System solution better

High Speed Autosampler for Fast Analysis

The UHP Autosampler gives injections as quick as 15 seconds and allows for full loop, partial loop and a _l pickup mode for valuable samples.

Versagrad UHP Pump Specifications
Flow Rates 0.001 - 5.000 mL/min. (each pump)
Pressure 0 - 18,000 psi
Pulsation +/- 1% @ 1mL/min. and 1,000 psi
Pressure Accuracy +/- 1% of full scale pressure
Flow Accuracy +/- 2%
Flow Precision 0.2% RSD
Gradient Accuracy Within 1% absolute @ 1mL/min.
and 10,000 psi
Voltage 10-120 Vac, 50/60 Hz;
or 220-240 Vac, 50-60 Hz
Physical 6.5" H x 12.0" W x 15.5" D
(165 x 787 x 394 mm); 42 lbs (19 kg)

Standard Lab Alliance UHP HPLC System Pump Features

  • Automatic pressure calibration
  • Calibration function
  • Advanced recompression software
  • Stainless Steel Fluid Path
  • Low volume
  • Digital Control

Lab Alliance UHP HPLC System Gradient Control

  • Gradient control is achieved via host PC with EZChrom SI software
  • Communication from Pump Module to PC is through an RS-232 card
  • Typical Pump Gradient Percent Range: 0-100% in 0.1% increments
  • Low volume mixer
Autosampler Specifications
Injection range 1-5000 _l; 1 _l increments;
500 _l syringe
UHP model has 100_l loop
Sample capacity
 2 well plates 96 or 384;
96 vials (1.5 ml);
Option: 24 vials (10 ml)
Injection precision
 RSD for injection volume > 10 _l
Full-loop: 0.3%;
Partial-loop: 0.5%;
_l-pick-up: 1.0%
Carry-over
 Gas flush-out characteristic non sticking
compound < 0.05%
(Uracil in water; with 300 _l wash)
Needle wash
 1 solvent; programmable volume;
wash reservoir: 250 ml
Option: 6 wash solvents
Cycle time
 < 1 min, including 300 _l wash
Sample cooling (option)
 4 degree C +/- 2 degree C (at max ambient temp of 25 degree C)
Injection Cycle Time 10 to 15 seconds
Maximum System Pressures
 18,000psi
Sampling technology
 Air - pressure assisted sample aspiration;
No sample-syringe contact
Fixed concentric air/sample needle pair

Additional Lab Alliance UHP HPLC System Options

  • Metal-free sampling with silica-coated steel needle and PEEK valve HPLC version available
  • Reagent addition and mix
  • 6-port solvent selection valve for reagent addition and extensive needle wash (option)
  • Quick-fit injection valve for fast

Lab Alliance raised the pressure bar for ultra high pressure HPLC (UHPLC) from 3000 psi to 18000 psi with the introduction of a new modular chromatograph.

This brand new system costs approximately 20% less than any other system on the market AND offers equal or better performance. Such performance is WITHOUT precedence in the market. The performance and savings in time and money spent on solvent is without parallel. Gradient elution is provided by two pumps and a high pressure mixer. Lab Alliance is legendary for pump engineering -provable performance equivalent or superior to any pump on the HPLC market- and straightforward design. Their pumps probably have a serviceable life of several decades !

These pumps can deliver mobile phase at 0.001 to 5mL per min at 18,000 psi ! A market first !

  • UV, Diode Array, Fluorescence Agilent Detectors
  • Full digital control and data acquisition
  • Standard and micro volume flow cells
  • 20-80 Hz data acquisition rate for fast chromatography

One of the most interesting design challenges was to reduce the pressure 'ripple' and maintain the flow rate. For some solvents, especially organics, the compressibility is so high that about half of the displacement stroke is used up in compression! LabAlliance solves the hurdle with active control algorithms to balance this requirement. Pressure recordings show that pressure ripple at 15,794 psi is about 10 psi. The spec is less than 1.5% or about 220 psi. Astounding ! Flow rate accuracy at 10,000 psi is within 1 % and precision is better than +/- 0.5%

At LabAlliance....mission accomplished !