High Performance Packed Column for HPLC - Scepter Diol-HILIC Series

Importance of the topic

Hydrophilic interaction liquid chromatography (HILIC) is widely used for separating polar compounds in pharmaceuticals, bioanalysis and food testing. Shim-pack Scepter Diol-HILIC columns offer high efficiency and reproducibility, making them valuable for laboratories seeking robust, metal-free columns compatible with UHPLC pressures.

Objectives and Study Overview

This manual provides practical guidance for installing, operating and maintaining Shim-pack Scepter Diol-HILIC columns. It aims to help users protect column integrity, optimize chromatographic performance and extend column lifetime.

Methodology and Instrumentation

Ultrahigh-performance columns packed with 1.9 µm, 3 µm or 5 µm dihydroxypropyl bonded silica are designed for use with HPLC/UHPLC systems. Recommended tubing:

• PEEK or stainless steel (UHPLC) with 0.1–0.3 mm ID
• Outer diameter of 1.6 mm

Mobile phases typically consist of acetonitrile/water or buffers (ammonium acetate/formate) at 5–200 mM. Use 90/10 to 60/40 (v/v) acetonitrile/water and maintain 3–95 % organic content to ensure a stable water layer on the packing. Operate at pH 2–10 and temperatures up to 40 °C (max 50 °C).

Key Results and Discussion

Quality control testing confirms consistent column performance. Proper installation with male nuts, ferrules or Nexlock fittings avoids dead volume and peak broadening. Metal-free connections reduce metal contamination risks. UHPLC operation requires minimized extra-column volume: tubing length under 5 cm and detector flow cells of low volume. Data rates ≥10 points/peak and response times <0.1 s preserve sharp peaks.

Benefits and Practical Applications

• High resolution and reproducibility for polar analytes
• Compatibility with a wide pH range and buffer strengths
• Reduced sample adsorption due to Diol chemistry
• Metal-free flow path minimizes unwanted interactions

These features support applications in drug metabolite profiling, glycan analysis and food quality control.

Future Trends and Applications

Ongoing improvements may include novel stationary phases with enhanced selectivity, deeper integration with mass spectrometry via metal-free interfaces, and micro-UHPLC formats for limited sample volumes. Automated column washing and real-time monitoring of backpressure trends will further extend column lifetime.

Conclusion

Shim-pack Scepter Diol-HILIC columns deliver stable, high-performance separations in HILIC mode when installed and maintained correctly. Observing pressure limits, proper mobile phase preparation and careful system setup ensures reliable results and prolonged column life.

References

Shimadzu Corporation. Shim-pack Scepter Diol-HILIC Series Instruction Manual. ERAD-0001-9045.