title: Choice of analog electronic low-pass filters in chromatography.
abstract: Butterworth low-pass filters, frequently used to improve signal-to-noise ratios in chromatographic instrumentation, are chosen for their frequency domain characteristics; their time domain response may introduce spurious peaks which are eliminated by use of the Bessel filter which provides improved chromatographic response.
mesh_terms: D001679:Biogenic Amines / Q000302:isolation & purification*; D002395:Catecholamines / Q000302:isolation & purification; D002849:Chromatography, Gas; D002853:Chromatography, Liquid; D005374:Filtration
chemical_list: D001679:Biogenic Amines; D002395:Catecholamines