Comparison of SI-35 4D and SI-52 4E Ion Chromatography Columns (Flow Rates and Resolution)

Record: 908

Category: Column Selection
Product: SI Series
Sample: N/A

Question

What are the minimum usable flow rates for the SI-35 4D and SI-52 4E columns? Does the smaller 3.5 µm particle size of the SI-35 4D result in higher back pressure but better resolution?

Answer

The smaller particle size of SI-35 4D offers sharper peaks and shorter run times but with higher back pressure. The SI-52 4E, with larger particle size but longer length, provides higher overall resolution.

• SI-35 4D

  • Maximum usable flow rate: 0.8 mL/min

  • Recommended flow rate: 0.6 mL/min

  • 3.5 µm particle size provides improved separation efficiency, but the shorter column length (150 mm vs. 250 mm) results in a slightly lower theoretical plate number (TPN).

  • Allows for faster analysis times.

• SI-52 4E

  • Maximum usable flow rate: 1.0 mL/min

  • Recommended flow rate: 0.8 mL/min

  • Longer column length (250 mm) contributes to higher TPN, providing greater overall resolution for complex separations.

Additional Comments

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