electrochemical detector - an HPLC detector based upon an electroreductive or electro-oxidative process at a micro electrode in a low volume detector flowcell. The process is similar to polarographic techniques, and such electrochemical methods can be adapted to HPLC.

See electrochemical detector.

electronic integrator - instrument which converts the chromatographic signal into a frequency count proportional to peak area.

eluent - general designation of mobile phase in chromatography.

eluate - that which is eluted from the column; designation of the sample when separated and dissolved in the mobile phase.

elution analysis - elution chromatography; the most commonly used technique in chromatography; the sample components are transported by the mobile phase and separated according to their degree of surface interactions.