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Which of the following is not true about narrow bore column when compared to standard columns?

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Which of the following is not true about narrow bore column when compared to standard columns?

(a) Internal diameter decreases

(b) Volumetric flow decreases

(c) Solvent cost is saved

(d) Detector response time increases

This question was posed to me during an interview.

This key question is from Liquid Chromatography in portion Chromatography of Analytical Instrumentation

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Correct choice is (d) Detector response time increases

Easy explanation: Detector response time increases in narrow bore columns. High purity solvents must be used in these columns.

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