Perfect peak shape with lowest back pressure
• Perfect peak shape and low back pressure
• Ultra-high purity(>99.999%) Type B silica particles
• New bonding and endcapping technique
• Economically priced

Widensil HPLC column derives its outstanding performance from a special hybrid particle based technique, which coats a unique 5 nm organic/inorganic polymer layer on the silica surface, so that the pH range is extended to 1.0-12.5.
Widensil column is designed for HPLC method development. Regardless of the types of mobile phase or high temperature, Widensil HPLC column always has stable performance and long lifetime

Next generation particle for HPLC Column
• X features of Widensil column
• eXtra pH range: wide pH range from 1.0 to 12.5, excellent peak shape for strong bases
• eXtra column lifetime: 5 times of similar product such as Gemini
• eXtra performance: column efficiency of 5 µm columns is as high as 90,000/m, 2-3 times of that of Xterra
• eXtra care from Labo4u: enjoy excellent pre-sales and after-sales service from Labo4u

Labo4u Coresil core-shell HPLC column particle has a size of 2.7 µm, and consists of 1.7 µm solid core and 0.5 µm porous layer(porous shell).
This type of column can provide sub-2 µm efficiencies (~200,000 p/m) and high resolution at much lower back pressure. Coresil core-shell column can be used on both HPLC and UHPLC systems, with straight-forward method optimization process.
Features
• Sub-2 µm efficiencies (~200,000 p/m) and ultra-high resolution at much lower back pressure
• Ultra-fast separation
• Compatible with both HPLC and UHPLC systems
• Narrow particle distribution
• A standard 2 µm inlet frit prevents plugging by dirty samples, suitable for complex sample analysis
• A variety of bonding phases provide choices of different selectivities, while always maintaining excellent peak shape and lot-to-lot reproducibility
• Maximum pressure: 600 bar

Extrasil AQ-C18 columns are designed to have extended retention and selectivity for hydrophilic and polar compounds, which are poorly or not at all retained on other phases. A proprietary bonding chemistry, Extrasil AQ-C18 avoids so-called “phase collapse”, even when 100% water is used, a phenomenon that conventional C18 columns typically exhibit at high water content in the mobile phase. Extrasil AQ-C18 phase is fully end-capped to ensure the best peak shapes of polar and basic compounds and longer lifetime. Typical applications are separations of water soluble compounds that cannot be retained on traditional C18 phase. Examples include biomolecules, metabolites, and pharmaceutical degradants such as organic acids, water-soluble vitamins, oligosaccharides, amino acids, and small peptides and nucleotides.
Features:
• No phase collapse, suitable for high aqueous mobile phase
• Less retentive than XB-C18 for non-polar compounds
• Increased retention for polar and water soluble compounds
• Carbon loading: 12%, pore size: 120 Å, particle size: 3 µm, 5 µm, 10 µm

Extrasil ion exchange columns are available for both Strong Anion Exchange (SAX) and Strong Cation Exchange (SCX) columns. The SCX/SAX columns are silica based with high resolution and high efficiency.
Extrasil SAX is a polar bonded phase, consisting of an ammonium-functionalized silane, while Extrasil SCX is a classical strong cation exchange, consisting of a covalently bonded aromatic sulfonic acid moiety.
• Organic modifiers such as acetonitrile and methanol may be used with SAX and SCX columns, within organic/buffer solubility constraints
• Retention can be controlled by varying pH, ionic strength and organic modifier content
• Stable pH ranges from 2.0 to 7.0

Extrasil XB series column is the first series introduced by Labo4u. This series spans complete bonding chemistries, and provides a variety of selectivities for method development.
• Easy to develop or improve your HPLC method
• Excellent performance, exceptionally rugged USP phases
• Exceptional lot-to-lot reproducibility

Extrasil XB-C18 is the most commonly used column in the market. It can substitute Waters Symmery C18, Agilent Zorbax XDB C18, Phenomenex Luna C18, Supelcosil LC-18-DB, YMC ODS-AM, Alltima C18, GL, Inertsil ODS-2 etc. XB-C18 has high theoretical plates and peak capacity, so it’s suitable for analysis of complex samples.