Columns, Consumables and Accessories.

GL Sciences HPLC and LC/MS columns are technically engineered using a proprietary "Evolved Surface" (ES) silica gel, which provides a highly inert base for chemical separations. This specialized silica substrate minimizes secondary interactions between analytes and residual silanol groups, which is critical for achieving symmetric peak shapes for basic and acidic compounds.

GL Sciences offers a sophisticated range of HPLC and LC/MS accessories technically engineered to ensure the integrity of the analytical flow path. The portfolio includes high-pressure fittings, such as the "Tough Connector" series, which are designed to withstand pressures up to 41.3 MPa while providing a secure, leak-free seal through finger-tightening. These accessories are manufactured from chemically resistant materials & high-grade stainless steel to ensure compatibility with a wide range of mobile phases (pH 1-14).

GL Sciences provides an extensive range of HPLC columns specifically categorized to meet the requirements of the United States Pharmacopeia (USP). These columns are technically engineered using high-purity silica gel substrates, such as the ES (Evolved Surface) silica, which minimizes trace metal contamination and residual silanol activity. This is critical for pharmaceutical laboratories that must adhere to strict USP monographs, where peak symmetry and resolution for basic or acidic drug compounds are non-negotiable.

GL Sciences offers a comprehensive range of GC and GC/MS capillary columns, notably the InertCap series, designed to address the most demanding chromatographic challenges. These columns are technically engineered using a proprietary deactivation technology that eliminates residual silanol groups and metal impurities from the fused silica surface. This results in exceptional inertness, which is critical for the analysis of highly polar, acidic, and basic compounds that are prone to adsorption or peak tailing. 

GL Sciences provides a sophisticated ecosystem of accessories designed to optimize the sample path and maintain the integrity of GC and GC/MS systems. The technical focus lies in reducing analyte degradation and adsorption through high-level deactivation treatments, particularly in inlet liners and injector components. These accessories are engineered to withstand extreme thermal conditions, with premium septa capable of operating up to 400°C without significant bleed. 

GL Sciences offers a robust portfolio of GC packed columns and adsorbents tailored for applications where capillary columns may face capacity or selectivity limitations. The technical core of this range includes specialized porous polymer beads, such as the styrene-divinylbenzene copolymers, which are treated to ensure high thermal stability and batch-to-batch reproducibility. These packed systems are particularly effective for analyzing permanent gases, light hydrocarbons, and polar solvents. 

GL Sciences provides a specialized suite of accessories designed to support the unique hardware requirements of packed column gas chromatography. These accessories focus on maintaining a zero-leak environment and protecting the integrity of the stationary phase during high-temperature analysis. Technical highlights include heat-resistant silicone O-rings, specifically engineered for glass columns, which maintain flexibility up to 280°C to prevent atmospheric oxygen ingress. 

GL Sciences provides an extensive range of Solid Phase Extraction (SPE) columns designed to simplify complex sample matrices and concentrate trace analytes. The technical foundation of these columns lies in the use of ultra-pure silica and diverse polymer chemistries that offer high surface area and consistent pore distribution. By leveraging various retention mechanisms these SPE tools effectively remove interfering compounds such as proteins, lipids, and salts. 

GL Sciences offers a comprehensive ecosystem of Solid Phase Extraction (SPE) accessories designed to optimize the efficiency and reproducibility of sample preparation. Central to this lineup are the vacuum manifold systems, which facilitate the simultaneous processing of multiple samples. These manifolds are technically engineered to provide uniform vacuum distribution across all ports, allowing for consistent flow rates, a critical factor in maintaining analyte retention and preventing breakthrough. 

GL Sciences provides a sophisticated range of instruments designed to bridge the gap between manual sample preparation and high-sensitivity chromatographic analysis. At the core of their technical offering are fully automated Solid Phase Extraction (SPE) systems, specifically engineered for environmental and water quality testing. These instruments automate the entire four-step SPE processeliminating the variability associated with manual handling.