Which of the following is not a desired characteristic of pulse dampers or flow smootheners used in liquid chromatography?(a) Easy mobile phase change over(b) Constant flow must be maintained(c) Should be effective at low system pressure(d) Maximal dead volumeThis question was addressed to me in my homework.My question is from Liquid Chromatography in section Chromatography of Analytical Instrumentation

Which of the following is not a desired characteristic of pulse damper

1.	Which of the following is not a desired characteristic of pulse dampers or flow smootheners used in liquid chromatography?(a) Easy mobile phase change over(b) Constant flow must be maintained(c) Should be effective at low system pressure(d) Maximal dead volumeThis question was addressed to me in my homework.My question is from Liquid Chromatography in section Chromatography of Analytical Instrumentation
Answer» Right choice is (d) MAXIMAL dead volume For explanation I would say: PULSE dampers are USED to avoid variations in flow. They MUST have MINIMAL dead volume.

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