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Which of the following is not true about Hydraulic capacitance flow control system used in HPLC?

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Which of the following is not true about Hydraulic capacitance flow control system used in HPLC?

(a) It can be used only for liquids with low viscosity

(b) It is irrespective of solvent compressibility

(c) It maintains a constant flow

(d) It smoothens high pressure pump pulsations

I had been asked this question in an online interview.

Enquiry is from High Pressure Liquid Chromatography topic in chapter Chromatography of Analytical Instrumentation

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The correct answer is (a) It can be used only for liquids with low viscosity

Easiest explanation: Hydraulic capacitance flow control system used in HPLC is irrespective of the solvent viscosity. It is also irrespective of the solvent compressibility.

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