Inertsil Hybrid-C18: Stability Across a Wide pH Range
Watrex Prague: Inertsil Hybrid-C18: Stability Across a Wide pH Range
Hybrid technology is becoming increasingly important in chromatography and for good reason. Modern analytical laboratories face complex molecules, demanding conditions, and the need for robust, reproducible LC methods. Inertsil Hybrid-C18 from GL Sciences was developed as a response to this trend, combining the proven quality of the Inertsil series with the new possibilities offered by hybrid organic–inorganic silica materials. Read on to learn what makes hybrid columns unique and what advantages they bring.
Watrex: Special promotion on new Inertsil Hybrid-C18 columns from Watrex Prague.
Hybrid Technology: A New Level of Stability
Inertsil Hybrid-C18 is a reversed-phase C18 column engineered with hybrid silica gel that combines inorganic silica with organic components. This construction provides exceptional chemical stability.
Watrex: Hybrid Technology: A New Level of Stability
Key Features
- pH range 1–12 – stable performance under both acidic and basic conditions
- Compatible with LC/MS and LC/MS/MS
- High durability and long lifetime
- Low bleed suitable for sensitive detection
- USP L1 (C18) classification
Thanks to these characteristics, the column performs reliably across a wide range of applications where conventional silica-based materials may fail.
A Legacy of Quality: From Silica Synthesis to the Final Column
GL Sciences manufactures Inertsil columns entirely in-house, from the synthesis of the base silica to the final packing. This vertically integrated process, established in 1994, ensures:
- outstanding quality,
- minimal lot-to-lot variability,
- reliability and consistency across production batches.
Inertsil Hybrid-C18 was developed for users who require high durability, a wide operational pH range, and stable performance even under strongly basic conditions.
Impact of pH on Selectivity: Stability Across the Entire pH Range
Changes in mobile-phase pH significantly influence analyte retention and selectivity. With conventional columns, operating outside the optimal pH range often results in degradation, loss of efficiency, or inconsistent retention times.
The hybrid material used in Inertsil Hybrid-C18, however, enables:
- stable chromatographic performance,
- excellent reproducibility,
- high efficiency even during long-term operation.
Watrex: Impact of pH on Selectivity
Exceptional High-pH Durability (pH 11.5)
Basic mobile phases are typically destructive for traditional C18 columns. Hybrid technology significantly improves resistance to alkaline conditions.
Advantages at pH 11.5
- no loss of theoretical plates
- preserved peak shapes
- no silica dissolution
- reliable separation even during long-term exposure
This durability makes it possible to develop methods that would be difficult or impractical to run on conventional silica columns.
Outstanding Lot-to-Lot Reproducibility
Three tested production lots of Inertsil Hybrid-C18 showed virtually identical retention times and peak shapes. As a result:
- method robustness is ensured
- revalidation when switching lots is unnecessary
Broad Application Range
The column delivers excellent peak shapes for:
- basic compounds (without tailing)
- acidic compounds (stable retention)
- metal-coordinating analytes (no unwanted interactions with metal surfaces)
This makes it an ideal choice for pharmaceutical, bioanalytical, and chemical laboratories.
Hardware Options
Inertsil Hybrid-C18 is available in:
- stainless steel (SS) hardware
- bioinert PEEK hardware (ideal for sensitive applications and LC/MS)
- custom dimensions, including preparative formats
The wide selection of configurations allows the column to be tailored precisely to the needs of any application.
Download new brochure HPLC, LC/MS Columns Inertsil Hybrid-C18
Conclusion: Why Choose Inertsil Hybrid-C18
Inertsil Hybrid-C18 is a modern column designed for today’s analytical challenges. It offers robustness, versatility, and the long-established reliability appreciated by users of the Inertsil series. If you are considering optimizing existing methods, switching to more durable columns, or upgrading chromatographic performance, now is the perfect time.
Watrex Prague has prepared a special offer! Until the end of December 2025, we are offering an exclusive 25% discount on all Inertsil Hybrid-C18 columns.
Visit our website www.watrex.com to browse the full range, access technical specifications, and place orders. If you have any questions, feel free to contact us. As the official distributor of GL Sciences, we are happy to assist you with product selection and technical support. For a non-binding quotation, contact us at [email protected].
