ProtumLink Core Series
ProtumLink Core 15cm
Product Description
Global Proteomics Standard
Core Benefit: Consistency and Coverage for Production Runs
The 15 cm column represents a well-established standard for global proteomics, delivering the separation space required for high coverage while maintaining excellent operational stability.
Chromatographic Excellence (FWHM Resolution)
At 500 nL/min, the column maintains ~3.5–4.6 s FWHM over 15–45 min gradients, ensuring reliable peak capacity throughout typical global proteomics analyses. This consistency supports high identification rates and robust quantification across extended study designs.
Backpressure Flexibility & Workflow Versatility
With a working flow range of 100–1000 nL/min, the format offers stable retention and dependable long-term performance. It is an excellent choice for core facilities, DIA workflows, and production-style proteomics, where reproducibility from batch to batch is essential.
Pressure profiles
Compatibilities
Core columns are bare fused-silica emitter-integrated analytical columns designed to be connected via a liquid junction. With an outer diameter of 363 μm, they are compatible with liquid junctions engineered for standard 360 μm fused-silica tubing. Depending on the instrument setup, metal junctions can provide grounding or high-voltage transfer, while PEEK junctions may be used when an external grounding or voltage supply point is available. Core columns can also be mounted directly in nanospray sources that are designed to accept bare emitter tips. This includes Thermo Scientific Nanospray Flex and Bruker CaptiveSpray sources (with appropriate emitter positioning accessories such as the CaptiveSpray (CSI) emitter adjustment kit), enabling use of the column itself as the electrospray emitter and minimizing post-column volume. Specific adapter configurations may be required depending on the vendor ion source when using bare emitter columns. Users should consult instrument documentation where compatibility with blank-emitter columns is explicitly described.
Compatible Connection Systems
• Thermo Scientific 6041.5290 nanoViper Fingertight Fitting System, 20 μm
Recommended Liquid Junction Options
• IDEX UH-750 VHP MicroTee® • IDEX UH-634 VHP MicroTight®
C18 Bead Specification
Specification Table
| Property | Specification |
|---|---|
| Silica Brand | ReproSil-Pur 120 C18-AQ (Dr. Maisch GmbH) |
| Chromatographic Mode | Reversed-phase |
| Particle Size | 1.9 µm |
| Pore Size | 120 Å |
| Surface Area | 300 m²/g |
| Bonding / Phase | C18 (ODS), fully end-capped, aqueous-compatible |
| Carbon Load | 15% |
| pH Stability Range | 2 – 8 |
| Max Operating Pressure | ≤ 1200 bar |
| Max Operating Temperature | 60 °C* |
*Ultra-fast gradients may be operated up to 70 °C.
Why We Use a Trusted C18 Phase
We rely on a well-established C18 material from Dr. Maisch because it has been widely used in LC–MS–based proteomics for nearly two decades and is known for its stable bonding chemistry, consistent material quality, and reproducible performance. This makes it a dependable foundation for achieving high-quality peptide separations across diverse workflows. The 1.9 µm C18 particles provide a balanced combination of peak capacity, mechanical robustness, and retention stability, supporting sharp and predictable peak shapes under the aqueous mobile-phase conditions typical for proteomics.
Application Notes
Ultra robust performance stability of 25 cm × 75 µm Emitter-Integrated Nanoflow Column with 1.9 µm C18 Material over 800 Samples
PDF - 1.5 MB
High-Sensitivity and Reproducible DIA Performance of a 15 cm × 75 µm Emitter-Integrated Nanoflow Column on the Orbitrap Astral System
PDF - 1.1 MB
Packages
Column ID (Diameter)