CEInfinite Automated Preparative iCIEF System

In response to the tremendous and urgent need for the identification of protein charge variants, Advanced Electrophoresis Solutions Ltd. has developed the CEInfinite Automated Preparative iCIEF instrument system.

AFC Preaparative

Why choose CEInfinite?

Superior preparative performance

Proprietary cartridges improve the detection sensitivity and can fraction pI within 0.1 difference. Typical automated one run is <1 hour.

High Protein Fraction Efficiency

Achieve as high as 90% purity. Can get as high as 8ug isomer per run.

Fast Method

Minumum R&D from iCIEF platform method.


A fully automated system allows ~100ug fraction per day.

Capillary Diameter Transfer Techonology

Our proprietary capillary diameter transfer technology (CDTT*) allows the high resolution preparation of charge variant isomers. Once the proteins are focused, the mobilization process begins and the peaks are pushed out of transfer capillary. This is visualized in real time on-screen via the whole column image detection (WCID) of iCIEF, which is not present in single-point detection CIEF.

During mobilization, the electric field is still applied to the separation capillary and the CDTT maintains the separation resolution of the sample into the narrower transfer capillary for high purity fractions of low pI different isomers.

*US Patent 10935519

CDTT Technology
NISTmAb fractions

4mg/ml NISTmAb in mobilization with overall resolution of protein preserved.

The stack of iCIEF profiles for all fractions,fraction purities can more than 90%.


Detection modeWhole column, sCMOS imaging technology
Sample capacity84+3 vial tray, 96 well plate
Sample tray temperature4 - 40°C
Syringe size250µL
Detection dynamic range250 (0.004 – 1.0AU, 280nm)
High voltage range0 – 3000volts (Continuously Adjustable)
Sample throughputUp to 12 injections per hour
Working temperature15 - 35°C
Humidity20 - 80%RH
Electrical requirement100/240VAC, 50 - 60Hz
Exposure time0.02 – 99.9ms
ADC maximum16386AU
Operation modeManual or automatic
Detector noiseLess than 0.001AU, 280nm
Separation pH range2.1 – 11.1